Birmingham City defender Matthew Upson's agent has accused the club of back tracking on an agreement and blocking his proposed move to West Ham.
The Hammers have had a £6million offer turned down for the former England international which Upson's agent Barry Neville claims goes against a verbal agreement between the player and the club.
"Matt is disappointed after having been told he could leave Birmingham for a certain amount - and what has been offered has gone way past that," Neville told the Birmingham Sunday Mercury.
"There's not really much more I can say other than I'm disappointed and I'm disappointed for Matt.
"As to whether he would be interested in a move to West Ham, that can't be answered until a bid has been accepted."
Upson has 18 months remaining on his existing contract and has so far rejected the opportunity to sign a new deal to remain with the Championship promotion hopefuls.