Andrew Halliday - Photo-Martyn Harrison, Blades Sports Photography

Although initially a winger, he successfully converted to left-back at the start of the 2012-13 season before signing a contract extension in March 2013 taking him to the end of June 2015.

Andy had been the target of leading clubs north and south of the border before joining Boro and had also enjoyed training spells with Charlton and Italian club Parma.

He joined Boro for an undisclosed fee, coming off an Almondvale production line that had already seen Graham Dorrans (West Brom), Robert Snodgrass (Leeds and later Norwich City) and James McPake (Coventry) cross the border with great success.

He was given his debut as a schoolboy by Boro's U18 coach Mark Proctor when he was in charge at Almondvale, playing the final 25 minutes of a 5-2 defeat to St Johnstone at McDiarmid Park in April 2008.

His goalscoring record of 16 goals in 23 games in his final season in Scotland meant he was sometimes mistaken for a striker.

Andy also had a stunning goalscoring record for Livi's U19 side, netting 24 in 17 games in season 2008/2009 from left midfield.

He made his Boro debut in a 1-0 win against Sheffield United at the Riverside on Sunday August 22 2010, scoring his first goal for the club with a Man of the Match display off the bench in a 3-3 draw away to Ipswich in April 2011.