Manchester United took the lead through Joshua Zirkzee but were held to a 1-1 draw at Real Sociedad in the first leg of their Europa League last-16 tie on Thursday.

United had the only real chance of the first half against Sociedad when Bruno Fernandes had a goal-bound shot blocked and Zirkzee's follow-up effort was saved.

Alejandro Garnacho hit a shot into the side netting but 12 minutes into the second half he pulled a pass back to the unmarked Zirkzee on the edge of the area and the Dutch forward drove a first-time shot past keeper Alex Remiro.

Sociedad pushed for an equaliser with Brais Mendez bending a shot just wide of the post and they were awarded a penalty for a handball by Fernandes which Mikel Oyarzabal converted to level the tie with 20 minutes remaining.

As the hosts grew in confidence, Mendez forced United keeper Andre Onana into a fine save and substitute Orri Oskarsson put a close-range effort wide but United hung on to remain the only unbeaten side in the competition this season.