Barton is available on a free transfer, and Sam Allardyce is keen to reunite the 28-year-old with Kevin Nolan at the heart of West Ham's midfield.
Is this the way to east London? West Ham will renew their interest in Barton
The former Manchester City midfielder would be forced to take a pay cut from his current ?80,000-a-week wages.
A move to the Championship club also hinges on the future of wantaway midfielder Scott Parker.
Great Scott: Parker is keen to seal a return back to the Premier League
Parker, who scored in West Ham's 4-0 rout at Watford on Tuesday night, is desperate to seal a move back to the Premier League.
But his current pursuers, which include Tottenham, Chelsea and Arsenal, have so far failed to meet West Ham's ?8million valuation of their star midfielder.
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