Erik ten Hag could not give a significant update on Kobbie Mainoo's injury as he admitted he would have to wait to find out the extent of the problem that forced the teenager off the pitch against Real Madrid.
Mainoo was handed a start in midfield alongside Casemiro and Mason Mount against Carlo Ancelotti's side but required medical attention just two minutes after the game had kicked off.
The youngster's night ended prematurely after a collision with Madrid winger Rodrygo. As the Brazilian looked to run towards the United goal, he was upended by Casemiro.
The challenge sent Rodrygo flying towards the deck and unfortunately for Mainoo he was in the wrong place at the wrong time as Rodrygo landed on him. Read more: United player ratings vs Real Madrid Mainoo was replaced by Christian Eriksen and was later pictured leaving the stadium wearing a protective boot on his left foot.