Skysports.com understands a host of clubs are monitoring Lloyd Sam's situation at Charlton.
Sam's current deal expires at the end of the season and as yet no new contract has been agreed at The Valley.
The news has alerted a number of clubs to the winger's possible availability at the end of the season.
Sam has been instrumental in Charlton's push for promotion this season with a number of eye-catching showings and his performances have not gone unnoticed by other sides.
Championship trio Queens Park Rangers, Leicester and Sheffield United are all thought to be keen on Sam, along with a number of other clubs.
Charlton would be loath to lose the exciting wide-man, but they could face a battle to keep hold of him in the summer if they do not tie him down to a new deal.