It was a miserable Wednesday night for Everton as they lost at home to Bolton Wanderers despite taking the lead thanks to a freak Tim Howard goal.
The Toffees also saw Phil Jagielka and Leon Osman leave the Goodison Park pitch with injuries and it has now been confirmed that the former will be out for six weeks.
Jagielka is the team’s best defender although it appears that the former Sheffield United player sustained medial ligament damage after blocking a David Ngog shot during Wednesday night’s game.
“Jags has got medial ligament damage,” said Moyes. “Losing Jagielka is an incredibly big thing for us because the one thing about the team at the moment is they have been very strong defensively in the main.
“Whether it has been Jagielka with Sylvain Distin or John Heitinga that has worked really well for us.
“To lose him is a massive blow to us because he is an integral part of the defence and very important to us.”
Osman will also be missing for matches against Cheltenham and Tottenham thanks to a knee injury, while Moyes reported other key players are also in the treatment room.
“Leon Osman has a floating bone in his knee which we think will have to be taken out and we have a few other injuries kicking around as well – Tim Cahill, Ross Barkley (knee) and Jack Rodwell (hamstring).
“Jack’s had a recurrence of his hamstring injury. It is not serious but every time we get him scanned it is a grade one and very light and he comes back and doesn’t feel anything.
“We maybe just need to give him a week or so longer to make sure he is right this time.”