Mourinho also managed Fellaini at United to much success, and says Moyes has found the second coming of the midfielder in Tomas Soucek.
"I told them to be aware of set-pieces against, which we knew they were very strong," he told Sky Sports.
"David found in Soucek his new Fellaini. They fought very hard to be lucky, so I praise them.
"This is a game that was in the pocket and we lost two points."