Manchester United goalkeeper Anders Lindegaard could be out for six weeks with an ankle injury.
The 27-year-old Dane has ligament damage and manager Sir Alex Ferguson confirmed he would miss "at least four weeks, maybe five or six".
David de Gea is likely to be named in goal against Chelsea on Sunday.
De Gea, who has been suffering from illness, and Lindegaard missed Tuesday's 2-0 win over Stoke, when 21-year-old Ben Amos deputised.
The trip to Tottenham in the Premier League on 4 March is the earliest United expect Lindegaard to return to action.
He has started eight of the defending champions' 23 Premier League games this season and has provided competition for Spaniard De Gea, who has struggled to adapt to the English game in the wake of his £18.9m move from Atletico Madrid last June.
Pole Tomasz Kuszczak, whose contract expires in the summer, has found himself out of favour at Old Trafford and has been frustrated in his attempts to secure a loan move away from Old Trafford.