Unai Emery admitted the horror injury suffered by Danny Welbeck affected Arsenal's players in their goalless Europa League draw with Sporting Lisbon here on Thursday. England striker Welbeck was taken to hospital after sustaining a suspected broken ankle in the first half when he challenged for a header in the box before crumpling onto the pitch.

Many of Welbeck's team-mates appeared distressed as he received lengthy treatment and needed an oxygen mask before being carried off on a stretcher. Gunners boss Emery said: "It's the worst news tonight, this injury. It's clear that we are with him in these minutes. He was working well and he was having a good match. He had some chances too. His injury was with the mentality of the players. They saw it was a big injury.