After taking part in a Q&A session, the former Uruguay international chatted to fans, signed autographs and posed for photos.
Asked what he liked best about Teesside, he said: "I like the people. You can live in big cities but buildings are buildings but it's the people who make a town."
Percovich said he believes Boro's Rockliffe Park training HQ is the among the best in the Championship and as good as most at the top clubs in Europe.
Admission to meetings is free to members and new members are very welcome to join at meetings, with prices remaining the same as last season at £6 per year for adults and £2 for under-16s.
Two passport-sized photographs are required with each new application.
Meetings are usually held on two Mondays per month in the Riverside Stadium's Fenton Suite. Members are asked to arrive at 7pm for a 7.30pm start.
There was a big turnout when Boro legend and new Assistant Head Coach Craig Hignett visited MOSC's last meeting.
Higgy, famously the scorer of the first goal at the Riverside, recently returned to the club after a spell as Colin Cooper's right-hand man at Hartlepool.
He entertained members with stories from his playing days,
Previous guests in recent months have included former players Bernie Slaven, Terry Cochrane, Ian Gibson, David Mills and Alan Peacock, current stars Dimi Konstantopoulos, George Friend, Frazer Richardson, Emmanuel Ledesma, Andy Halliday, Jason Steele and Jonathan Woodgate, coach Paul Jenkins and head of sports science Peter Hood.
MOSC's Facebook page is here.
MIDDLESBROUGH Official Supporters Club's committee generously give their own time to work for the good of members.
Our photo shows the committee together at the meeting and includes Marilyn Wilson (social secretary), Sandra Jackson (membership secretary), Michael Derbyshire (vice-chair), Carol Kidner (treasurer), Graham Mawson (vice-chair), Sue Garbutt (vice-secretary), Sue Gardener (former chair) Val Bandeira (publicity secretary).
Membership fees are just £6 per adult and £2 per child 16 years or under and memberships run from August to August each year.
For just £6 our members benefit over non-members by with...
*Priority to any of our organised events
*Price reductions to organised events
*Free entry into a grand raffle draw to win two tickets to our prestigious Player of the Year event
*A chance to meet MFC senior staff, management and backroom staff, players past and current and local media and press celebrities.
As well as social events, meetings also act as a means to canvass members for their views, ideas and concerns to be passed onto the MFC through regular liaison meetings attended by MOSC committee members and MFC staff.
Examples of issues raised at liaison meetings include season card prices, the white chest band on replica team shirts and ideas for matchday entertainment.
Please note, although MOSC organise trips for league and cup away games these are weekend trips only. For all away game tickets and transport please contact the MFC ticket office.
Membership fees are £6 per adult and £2 for under-16s and two passport sized photographs are required with each new application.
Meetings are held in the Riverside Stadium and start at 7.30pm. They are free to members but non-members can attend by joining on the night. Two passport-sized photos are required with each application.
Members are asked to arrive at 7pm for a 7.30pm start.
Please contact Carol Kidner on firstname.lastname@example.org for further information.
Click here for information about the Boro Fans United scheme, coordinated by MOSC's Sue Gardener, uniting Boro fans around the world.Middlesbrough Official Supporters' Club
Vice-chairman (spokesperson and general enquiries): Graham Mawson, Tel: 07443 648307 email@example.com
Vice-chair: Sue Magson, email firstname.lastname@example.org
Secretary (all general enquiries): Geoffrey Richardson 01642 801289 Geoffrey.Richardson1@ntlworld.com
Treasurer: Carol Kidner, email (home): email@example.com
Membership Secretary: Sandra Jackson
Publicity Secretary: Val Bandeira firstname.lastname@example.org
Social Secretary: Marolyn Wilson email@example.com
SEE BELOW FOR MORE SUPPORTERS CLUB BRANCHES
Middlesbrough Disabled Supporters' Association
Chairman: Paddy Cronesberry
Treasurer: Paul Richardson
AS well as campaigning on behalf of disabled fans, the association also organises trips to most away games.
It has 300 members, including all disabled season ticket holders. Meetings are usually on the last Tuesday of every month in the Players' Lounge at the Riverside Stadium.
The group has a very close relationship with the club and meets officials regularly to discuss issues affecting members.
The club organised a highly-successful trip over land to Boro's first ever UEFA Cup away tie, at Banik Ostrava in September 2004 and has made several subsequent overseas adventures.
For more information, visit MDSA's official website at http://www.mdsa.co.uk/.
Membership: £3 for adults, £2 for senior citizens and £1 for juniors. Lifetime membership is also available for £10. Members get an ID card.
Write to: Paddy Cronesberry, 205 Thornaby Road, Thornaby, Stockton TS17 6LS or telephone (01642) 641620.
The Twe12th Man
THE Twe12th Man is a group of Middlesbrough fans united in our unconditional support for the Boro.
Our objectives are to add pride, passion and noise to the matches of Middlesbrough FC, home and away, visually and vocally, for the full 90 minutes, win lose or draw!
The Twe12th Man stands independent of any political organisation, funding or belief, and is a non-profit, non-membership based organisation.
Take a look around the website at www.twe12thman.co.uk and send in your ideas, song suggestions or Boro related photos.
Regular match reports or articles are always welcome. It is a site by the fans for the fans.
Chairman: Gary Patterson
Vice-chairman: Ray Earl
Secretary: Duncan Haywood
WHAT began as a group of friends travelling to games together in 1995 is now a thriving organisation with around 130 members.
The club meets monthly, usually in one of the two cities from which it draws many of its members, Sheffield and Nottingham. Guest speakers have included Derrick Downing, Don Masson, Chris Freestone and honorary president John Hickton, who brought along his memorabilia, including championship medal and scrapbook.
The club now has its own minibus and while many members are Teesside exiles it also has many second generation Boro fans.
Membership is free. Call Duncan Haywood on 01246 811244 or email firstname.lastname@example.org.
Middlesbrough Supporters South
Chairman: James Nugent
Sports and Charity Representative: Andy Clark
Charity Representative: Johnathon Gallagher
Treasurer: Dave Richardson
Communications officer: Scott Perkins
Website editor: Dave Bain
SET up in 1975 by a handful of fans on the steps of the players' entrance at Highbury, MSS flies the flag for Boro in the south of England but also acts as a supporters club for Boro fans exiled across the world.Members receive a weekly e-newsletter to catch up on events, access to match tickets, reduced train fares and designated pubs for pre-match drinking at away games as well as a large sports club.
The supporters club has three current 11-a-side football teams playing in the London-based APFSCIL Sunday Football League, with the first team being current Division One champions, and two pool teams playing in the APFSCIL Pool League.
There is also a regular game of eight-a-side football at Coram Fields, near Russell Square, every Wednesday evening, for all abilities.
Contact Andrew.email@example.com for more details of the sports teams.
London-based supporters also benefit from watching Boro's televised games together in a central London pub (Usually Belushis or Roxys at London Bridge).
The supporters club also has an active charity arm including organising an annual football match at the Riverside Stadium for the Sir Bobby Robson Foundation, a Boro v Millwall fans match in aid of the Finlay Cooper Fund and an annual Christmas gift appeal for Zoe's Place Teesside Hospice.
For info on anything charity related please contact Andrew.firstname.lastname@example.org.
Membership is free and via registration at www.mss.org.uk
For more information contact James@mss.org.uk
Yarm Reds Supporters Club
YARM Reds have been established since 2001. Two coaches travel from the Golden Jubilee to every home league game. The cost is £4 per game or £55 for the season.
They also take in several away games per season. Contact either Andy or Col for further details.
Boro Fans United
FORMER MOSC chair Sue Gardener has helped Boro fans throughout the world get together to form branches of the supporters club.
Here are the groups formed. Please email email@example.com with any changes.
Australian Boro Supporters Club
Contact: Lorraine Harrington
Aussie Boro Fans Forum: http://borodownunder.aceboard.com/
Bahrain Boro Supporters
Meets in the Orbit Sports Bar within the Dilmum Club
Contact: Andrew Storey on firstname.lastname@example.org.
Barcelona Boro Supporters
Meets at the Queen Vic in Nou de la rambla (Metro stops Liceu or Parelell).
Contact: Steve Wedgewood on email@example.com.
Cameroon Boro Supporters
Canada Boro Supporters Club
Contact: Jeff Collins
Brikama, Gambia, Boro Supporters Club
Contact: Lamin Darboe
Guinea Boro Supporters Club
Hull and East Riding Branch: Meetings held at North Ferriby United FC.
Contact: Richard Watts
Email: Richard@wattsshyngle.karoo.co.uk or call 07814 836504.
Korean Boro Supporters
Website: site: http://cafe.daum.net/Middlesbrough
Boro fans Malta
Contact: Ian Graham
Mainland Europe Boro Supporters Club
Contact: Dennis Abbott
Manchester Boro Supporters Club
Meets every Tuesday in the Power League in Stockport. All age groups and genders are welcome.
Contact: Rich Crewe
Facebook page: http://www.facebook.com/pages/Boro-Supporters-New-Zealand/196246013761601?ref=ts
New York/North East USA: Erimus Branch
Contact: Jessica Chamberlin
or Matt Green
Facebook page: http://www.facebook.com/group.php?gid=5797649462&ref=mf
Nigeria Boro Supporters Club
Contact: Eniola Akinosho
Meetings held on the last Sunday of each month at 6pm (local time) in the All Seasons Bar and Grill Multi-Purpose Hall, 89 Agbado Road, Iji-Ishaga, Agege, Lagos.
Norfolk Boro Supporters
Contact: Ian Fowler
North Sea Boro Supporters Club
Contact: Colin Crawford
North West Boro Supporters Club
Contact: Gary Warhurst
Meetings held in the Progress Sports and Social Club, Exchange Street, Blackpool
Northern Ireland Middlesbrough Supporters Club (NIMSC)
Contact: Mark Hill
Meets the first Wednesday of every month in Belfast. Contact Mark for more details.
Website: Coming Soon
Contact: Rune Sandvik
Contact: Daniel Gray
Contact: Ibrahim Yillah
Contact: Brian Abbott
A small group of fans meet in The Lazy Pig bar, Soi Yamoto (13/1), Pattaya, Thailand, for televised games.
Games are also shown in Jameson's Irish Pub. Email firstname.lastname@example.org to check games are being covered.
For a fans' site in the Thai language, visit www.mfcthai.com.
Wales Boro Supporters Club
Contact: Mark Richmond