Green was sent off for the first time in his club career against Blackpool on 21 February 2012. West Ham, who had not named a substitute goalkeeper in their squad for the match, were forced to play the remainder of the second-half with midfielder Henri Lansbury in goal. They eventually won 4–1. West Ham later won an appeal against the red card leaving Green available to play in their next match. He played 42 of West Ham's 46 match 2011–12 Championship season playing in the play-off final at Wembley Stadium which West Ham United won, sealing their immediate return into the Premier League. In June 2012, after West Ham and Green failed to agree new terms at the end of his contract, joint-chairman David Gold announced Green's departure from the club.