Arsenal defender Calum Chambers is a target for a raft of Premier League rivals.
Chambers spent last season on loan at Middlesbrough and scored one goal in 24 appearances for the Teessiders, but was unable to prevent Boro from being relegated to the Championship.
Crystal Palace, Everton and West Ham are all keen.
The 22-year-old started his career at Southampton and broke onto the scene in 2013, before joining the Gunners in the summer of 2014.
He has played for England at U17, U19 and U21 level and has three caps for the senior side.