Moyes will look to strengthen his squad before the transfer window closes on Friday.
He said: "I don't think it is my strongest squad (ever). We have just not got any injuries at the moment.
"I've got a bit of cover in some places but the numbers are down. But the flexibility we've got in the squad with [Steven] Naismith, Fellaini, [Leon] Osman, [Kevin] Mirallas, means we can cover things.
"But if we lost any group of numbers, we'd be struggling.
"I'd like to add to the squad if we could just to make sure we've got enough bodies. If I can add a loan or something came up which we could manage, then I would look to do it."