Manuel Ugarte could return for Manchester United in their Europa League round-of-16 second leg against Real Sociedad on Thursday.
Ugarte missed the first leg draw and the 1-1 stalemate with Arsenal in the Premier League with an unspecified injury but United coach Ruben Amorim suggested the defensive midfielder could recover for the tie.
Leny Yoro is a doubt after he was forced off at half-time against Arsenal on Sunday. Yoro was replaced by Ayden Heaven, who made his Premier League debut against the club he left in January.
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Heaven only turned 18 in September and Amorim was struck by how "relaxed" the England youth-teamer was at Old Trafford.
“Ayden is so relaxed, he seems so relaxed that sometimes he is too relaxed! But I think we have a player there. So now we have to control, to tell him that it was just a game etc. etc. Leny has something in his foot, I think we will see if he is available for Thursday.”
"Maybe Ugarte (can come back against Sociedad). I don't know. We'll see."
United were without ten players through injury again for the visit of Arsenal while Patrick Dorgu served the second of his three-match suspension for a straight red card against Ipswich Town.
Altay Bayindir, Tom Heaton, Harry Maguire, Jonny Evans, Lisandro Martinez, Luke Shaw, Kobbie Mainoo, Mason Mount and Amad are all currently sidelined.
Amorim said in midweek that Amad, initially ruled out for the remainder of the season, could play again this term. Martinez, who ruptured his anterior cruciate ligament against Crystal Palace last month, is the only one certain not to play until next season.