Celtic are the latest club to show an interest in West Ham's Frederic Piquionne.
The striker, who is also a target for Wolves, was omitted from Sam Allardyce's squad for yesterday's 1-0 home win over Coventry and it is understood that the club would be prepared to listen to offers.
John Carew has failed to tie down a regular first-team spot at Upton Park and could also go as Allardyce attempts to shuffle his playing pack this month.
The West Ham manager, who saw his side go equal top of the Championship on points with Southampton following Kevin Nolan's 66th-minute winner, has been given substantial funds by owners David Gold and David Sullivan with which to strengthen his squad during the transfer window.
Allardyce, who has already had bids for Huddersfield striker Jordan Rhodes and Cardiff's Peter Whittingham rejected, said that ideally he wants to bring in "two or three quality players" this month.
"We're looking at the striker position because we had 22 attempts at goal against Coventry and scored one goal, 19 against Derby and scored one, 19 again against Barnsley - scored one. That conversion rate is not good enough," said the manager, who has also been linked with Doncaster's Billy Sharp.
"In an ideal world I would say we'd be looking to sign two or three quality players - a defender, a wide player and a striker."
