Adam Clayton has reunited with manager Aitor Karanka after joining Birmingham on a free transfer.

The 31-year-old midfielder has signed a two-year contract at St Andrew’s, where he will work under Karanka, his former boss at Middlesbrough.

George Friend will be another familiar face for Clayton, the left-back having also swapped the Riverside Stadium for Birmingham this summer.

Manchester-born Clayton played for Leeds and Huddersfield before joining Boro in 2014. He made 241 appearances for the Teessiders, including 34 during the ill-fated 2016-17 Premier League campaign.

Birmingham revealed that Clayton has the option of a further year on his deal with Blues.