Manchester United could be without both Rafael and Antonio Valencia for the Champions League quarter-final tie against Bayern Munich on Tuesday.
Rafael had to be substituted at half-time against Aston Villa this weekend and is now a doubt for Tuesday while Valencia had to be left out due to tendinitis in his knee.
“With Rafael, it’s an injury and we need to check it out,” Moyes told Manutd.com.
“Valencia had a bit of tendinitis in his knee, which is why he wasn’t involved. He was probably one I would have put to full-back if we had lost one, so we knew we’d be short if that was the case.
“The young boy Guillermo Varela might have got on the bench but he was injured as well so we had to juggle it around. We have injuries but we will probably know more about them tomorrow. I’ve just got to hope that Rafa’s injury isn’t too bad.”
If both Rafael and Valencia are injured then United’s already weakened defence is going to extremely makeshift against Bayern Munich.
Phil Jones would be the only fit alternative to Rafael but as United are going through so many injury problems at centre-back right now, his position there is crucial. Plus, Moyes may have wanted to use him in a midfield role on Tuesday in a similar fashion to how he did against Ronaldo and Bale last season.
Tuesday was always going to be an extremely difficult match for United but if we are left with no fit right-back at all in the side, then it will make it that much harder for us.