Amorim later expanded on the nature of De Ligt’s injury, after he sat out of the draw against West Ham and Monday’s win at Molineux.
“I think he has something in his back, I don’t know for sure,” he said.
“Sometimes you see it’s not a big injury because he finished the game quite well against Crystal Palace, but he has some pain.
“You sometimes think it will be solved during this week, but sometimes he feels a little bit of pain and we have to be a little careful with that.”
The boss went on to add that a departure date for the three players involved in the Africa Cup of Nations cannot yet be confirmed, so United are preparing for the game with Amad, Noussair Mazraoui and Bryan Mbeumo.
“I expect today to have a decision or maybe tomorrow but we are waiting until the last moment to have all the players available, to choose the best team to start the game,” he added.
