Wayne Rooney and Patrice Evra return to the Manchester United squad for the FA Cup match against Arsenal tomorrow at Old Trafford.
Both players sat out the derby defeat by Manchester City last weekend because of suspension. Louis Saha also comes into contention following a knee injury after training all week but Gary Neville and Mikael Silvestre remain sidelined.
Manager Alex Ferguson will make changes with a Champions League first leg match to come on Wednesday against Lyon.
He said: "There are massive games to come so we have to balance our teams and hopefully get it right."
Arsenal welcome back defenders Kolo Toure and Emmanuel Eboue after returning from the African Nations Cup. But otherwise the Gunners have lost three more bodies with Gael Clichy (hamstring) and Bacary Sagna (personal reasons) likely to miss out and Philippe Senderos (thigh/knee) a doubt.
England striker Theo Walcott, a late withdrawal from the 2-0 victory over Blackburn because of a thigh problem, remains unavailable.
Johan Djourou (groin), Robin van Persie (thigh), Abou Diaby (calf), Manuel Almunia (sick), Denilson (hamstring) and Tomas Rosicky (hamstring) are also in the treatment room.
Provisional Man Utd squad: Van der Sar, Kuszczak, Brown, O'Shea, Simpson, Ferdinand, Vidic, Evra, Fletcher, Nani, Park, Scholes, Ronaldo, Anderson, Carrick, Hargreaves, Giggs, Tevez, Rooney, Saha, Welbeck.
Provisional Arsenal squad: Lehmann, Fabianski, Senderos, Hleb, Fabregas, Flamini, Adebayor, Eduardo, Bendtner, Traore, Song, J Hoyte, Gilberto, Gilbert, Randall, G Hoyte, Lansbury.
