De Ligt (undisclosed) suffered an injury that could impact both the remainder of the season and the start of the next one,
coach Ruben Amorim said in a press conference. "I don't know, we will check. I hope it is [only] a small issue because I am concerned, not only about this game [against Athletic Club], but about the squad for the next year. Hope it's nothing serious. We took a risk with [Harry] Maguire [having to come on]."