Robin van Persie has been ruled out of Manchester United’s game at West Ham on Saturday with the knee injury he sustained against Olympiakos.
The Dutchman scored a hat trick against the Greek champions but now United are waiting to find out if he will be fit for the Manchester derby on Tuesday.
And the 17-goal forward, who missed much of November, December and January with a thigh problem, faces another scan to determine the scale of his injury.
Manager David Moyes said: “Robin van Persie won't be available [on Saturday], we're getting him rescanned. We've got a lot of games coming up, it's important we have all our players fit and available.”
It means Moyes faces a decision whether to recall Javier Hernandez, who has not played since Feb. 9’s draw against Fulham, or to move Danny Welbeck, who excelled on the left wing against Olympiakos, into a central role, or whether to pick Wayne Rooney as a lone striker.
Moyes is expecting a difficult game against Upton Park, citing West Ham’s improvement in 2014.
He added: “We got a really good result in midweek and hopefully we can build on it. I think Big Sam [Allardyce] has just won the Manager of the Month award, although I don't know if that was his curse last week. He's turned them around from a lower position but I don't think anyone's surprised by that.”
Moyes reflected on Wednesday’s 3-0 win against Olympiakos, saying: "We had given them something to shout about. There was nothing to be ashamed of about our performance.”