Skysports.com understands a number of clubs are keeping tabs on Fitz Hall's contract situation at Queens Park Rangers.
Hall's current deal expires at the end of the season and as yet no new contract has been agreed between both parties.
The 30-year-old has impressed for QPR this season upon their return to the Premier League, helping them to a clean sheet in Sunday's win over Chelsea.
The giant central defender has a wealth of Premier League experience from his time at Southampton, Crystal Palace and Wigan and a host of sides are believed to be weighing up a move for Hall.
QPR would be loath to lose Hall at the end of the season, but risk seeing him leave on a free transfer if they cannot tie him down to a new contract.