Arsenal players were left looking on in distraught as Danny Welbeck was carried off the pitch on a stretcher after suffering a serious injury in their clash with Sporting Lisbon.
The striker required an oxygen mask as he was treated on the pitch, with a leg brace also in place.
The striker had landed awkwardly on his ankle while trying to attack a header.
Danny Welbeck looks on as he is carried off on a stretcher at the Emirates Stadium
Welbeck’s ankle was caught underneath his leg after he had attacked a cross with a header
Team-mates looked on in shock at the extent of the injury, with Mateo Guendouzi visibly distressed by holding both hands to his face as Welbeck was treated on the pitch.
As the seriousness of the injury quickly became apparent, the Emirates Stadium fell eerily quiet as medical teams took due care in attending to Welbeck.
The striker was down for five minutes in the Sporting Lisbon box before he was carefully placed onto a stretcher and carried off to chants of his name from the club’s supporters who also applauded him off.
Mateo Guendouzi looks on with concern as Welbeck is treated for his ankle injury
Arsenal supporters applauded and chanted Welbeck’s name as he departed the field of plat
Welbeck managed to exchange handshakes of support with team-mates as he departed but there are now fears the nature of the injury could rule him out long term.
The incident occurred in the 25th minute as Welbeck ghosted in from the back post to attack a central cross from Stephan Lichtsteiner on the right.
Although he made contact with his header, the battle with a Sporting defender saw him land awkwardly on the ankle leaving him rolling around in agony.
Almost immediately the Sporting keeper Renan Ribeiro spotted the nature of the injury, pointing towards the striker to bring the game to a halt.
Pierre-Emerick Aubameyang replaced Welbeck in the Europa League tie which Arsenal can seal progression to the round-of-32 in if they win at the Emirates Stadium.