ESPNsoccernet.comCarroll fears his season could be overWest Ham goalkeeper Roy Carroll fears he might not play again this season
Roy Carroll: Back trouble.
The former Manchester United man has been sidelined since January 23 with a back problem.
That may now require surgery and although manager Alan Pardew estimates the Northern Ireland international might be back in contention by April, he would then have to oust Shaka Hislop, who has helped the Hammers win their last seven games.
Ahead of Saturday's FA Cup fifth round clash at Bolton, Pardew said: 'He is going to see a consultant about a minor operation to correct it as he hasn't seen much improvement.
'I don't want to say he will be out for the rest of the season because the lad is a bit worried anyway, but I think he will be out for five to six weeks.'
Stephen Bywater has been on the bench for the past few matches but could soon be challenged by Jimmy Walker, with the ex-Walsall goalkeeper about to play his first game since the final day of last season.
Walker suffered a serious knee injury in the 1-0 play-off final victory against Preston, but is set to make his comeback in the reserves.
Pardew added: 'Jimmy Walker is making fantastic progress and is set to play a reserve game, which is important to us as we are down to two goalies.
'There was a similar period last year where he came in and saw us home. He still tells everybody he got us promoted on his own, which is understandable if you know Jimmy.'
Midfielder Hayden Mullins and defender Danny Gabbidon missed training sessions ahead of Saturday's clash at the Reebok Stadium, but both are expected to retain their places against Sam Allardyce's side.
Bolton have already knocked the Hammers out of the Carling Cup, when Mexico striker Jared Borghetti netted the only goal of the game for the home side.