While Moyes insists he came up against plenty of players as physically imposing as Fellaini during his own days as a defender for Celtic and Preston North End, he admits he encountered few with the same natural ability.
"There used to be hundreds like him in my day," he said. "The difference is that Fellaini is not a centre forward so you're not always marking him, you're not always picking him up.
"When you got someone that size, you just knew you were in for a day when you might have to win some and lose some. In my day, there were more of that type, but not of the technical ability. Felli's biggest strength is not just his size and strength, it is that technical ability. His feet are very good and he's got great chest control."