Danny Welbeck was taken off on a stretcher with a serious-looking damage towards Sporting Lisbon.
The England star went up for a header with Bruno Gaspar through the first half and appeared to land awkwardly and instantly known as for therapy.
Medical workers rushed onto the pitch and administered fuel and air to the striker as his teammates seemed on in concern.
He was consoled by Sporting captain and former Manchester United teammate Nani as he lay on the bottom.
Welbeck was given a rousing reception as he was taken off the pitch and changed by Pierre-Emerick Aubameyang.
BT Sport opted towards exhibiting the problem or Welbeck’s damage once more however footage recommend he could have suffered a damaged leg.
That might probably rule him out for a big chunk of the remainder of the season.
Welbeck has had a nightmare time with accidents however has labored his method again into the Arsenal first-team and even went to the World Cup this summer time.
Welbeck has been linked with a January transfer away from the Emirates in latest weeks, as he continues to play second fiddle to Aubameyang and Alexandre Lacazette.
Crystal Palace are considered eager on the striker, however the damage is more likely to dent any hopes of a January transfer.
Welbeck’s Gunners profession has been stricken by knee issues, since his arrival from Manchester United in 2014.
He missed round eight months of motion and Euro 2016 after choosing up a knee damage on the finish of the 2015-16 season.