Leny Yoro has been ruled out of Manchester United's Europa League clash with Real Sociedad but Manuel Ugarte returns for Ruben Amorim's absentee-hit side.
The round-of-16 tie is all square after last week's first leg ended 1-1 in San Sebastian, where Joshua Zirkzee's strike was cancelled out by a Mikel Oyarzabal penalty.
United midfielder Ugarte missed that match and Sunday's draw with Arsenal through injury but returns to the fold for Thursday's game at Old Trafford.
The Uruguay international trained on the eve of the match, but centre-back Yoro sat out the session with an issue sustained against the Gunners on Sunday.
"Leny is out," head coach Amorim said. "Harry Maguire cannot play this one, but I hope to have him for Sunday (against Leicester). Manu is in the squad and I think there is no-one else returning."
"No, (Yoro's absence) is not long term. Leny cannot play this game and the other game."
Mason Mount was another involved in Wednesday's session, but Amorim confirmed it was "too soon" for the midfielder to be involved as he recovers from a hamstring injury sustained in mid-December.
In addition to Yoro, Maguire and Mount, United remain without Amad Diallo, Lisandro Martinez and Luke Shaw on top of Altay Bayindir, Tom Heaton, Jonny Evans and Kobbie Mainoo.
Chido Obi, 17, is unavailable as he has not been registered for the Europa League squad, but Patrick Dorgu will be involved as the recent arrival's ban only extends to domestic competitions.
