The England international suffered a suspected broken ankle during Arsenal’s 0-0 draw with Sporting Lisbon on Thursday night.
The former Manchester United man was immediately taken to hospital to receive treatment on his right leg, which got trapped in the turf.
Welbeck’s latest injury setback is expected to keep him on the sidelines for at least four months.
The 27-year-old is out of contract at the end of the season, and former Gunner Perry Groves believes his old side should give the striker a new deal as a goodwill gesture.
“I think Arsenal should come out now and say they’re going to give him a contract extension,” Groves said during an appearance on talkSPORT.
“Danny Welbeck has suffered a horrendous injury, it looks like a suspected broken ankle and he could be out for the rest of the season, plus his contract is up as well.
“So I think they should come out now and say you’re going to give him another year.
“It would just take all the uncertainly away and that would help his rehab on the mental side of it.
“He’s wealthy boy now, it’s nothing to do with that, but for his mental well-being. I think it would be a magnificent gesture from my old club if they offered him a new contract.”
Hours after the match, Arsenal chief Emery took to Twitter to send his well wishes to the striker, whose future at the Emirates is well and truly up in the air.
“One more big reason to fight and win next Sunday,” the Arsenal boss tweeted. “All the @Arsenal with you. Hope to see your smile and energy soon, Danny!”
Arsenal return to action tomorrow afternoon, welcoming Wolves to the Emirates in the late kick-off.