Experienced defender George Friend joined Blues from Middlesbrough in August 2020.
The highly regarded left-back or centre-half penned a two-year deal, with a further one-year option.
Born in Barnstaple, Friend began his professional career with Exeter City. He helped them regain Football League status with a Conference Play-Off triumph over Cambridge United at Wembley in 2008.
He moved to Wolves and was part of the squad as they won the Championship in 2008/09.
But it was at Doncaster Rovers, aged 22, where his star really began to shine, playing regular football as captain.
Friend was named player of the year and players' player of the year at The Keepmoat Stadium in 2011/12.
He joined Middlesbrough in 2012 and quickly established himself as a top performer and firm favourite.
In the 2012/13 season he won Middlesbrough players' player of the season award and the following season he was named player of the season.
He dynamic displays were also recognised at a national level as he was twice voted to the PFA Championship team of the year for both 2014/15 and 2015/16.
He was a key part of the Boro side that reached the Play-Off Final and then secured promotion the season later, in 2016.
In total Friend racked up 299 appearances, scoring 10 goals, for the Teesside outfit.