George has become one of Boro's most popular players on and off the field since joining the club from Doncaster Rovers in July 2012 for an undisclosed fee, signing a three-year contract.
Boro beat off competition from two other Championship clubs to secure the highly-rated Doncaster captain, who was named Player of the Year and Players Player of the Year at The Keepmoat Stadium in 2011/12.
Barnstaple-born George started his career at Exeter City and helped the West Country side regain their Football League status with a Conference play-off triumph over Cambridge United at Wembley in 2008.
George, who can play at either left-back or centre-back, made his debut in the 2-1 Capital One Cup win at Bury in August 2012.
A popular figure among fans, Friend was named in the PFA Championship Team of the Year for both the 2014/15 and 2015/16 seasons for his adventurous performances from left-back. He has also been named the club’s Community Player of the Year on numerous occasions.
Following Boro's promotion to the Premier League in May 2016, George signed a new contract to keep him at the Riverside until 2020.
He played in his 200th league game for Boro in the 2017/18 season. Friend made 39 appearances, scoring twice, during a campaign that ended with him just one short of 350 career appearances.
The goal he scored away to QPR on January 20 was named Goal of the Season at the end of season awards night.
George notched 250 league match for us at home to Norwich City during the 2018/19 season, and is closing in on 400 career appearances.