Sky Sports understands Leyton Orient face a battle to hang on to midfielder Dean Cox this summer.
Cox has been a standout performer for Orient this season, playing a key role in them reaching the League One-play-off final.
The 26-year-old scored 17 goals this season, including in the play-off semi-final win over Peterborough and also in the final against Rotherham.
Cox's tally of 17 goals was his best for Orient since joining the club from Brighton in 2010 and he also had the joint-best assist record in League One with 15 assists.
Cox's form has not gone unnoticed among clubs higher up the football pyramid with several Championship sides weighing up moves for the attacking midfielder.
Orient are loath to lose Cox, but are bracing themselves for offers for the player following his outstanding campaign at Brisbane Road.