The 26-year-old striker came on as a second-half substitute in Arsenal’s 1-0 defeat to Tottenham at the weekend and left Wembley with swelling around his knee.
An official statement from the Gunners suggested that Lacazette could be on the sidelines for six weeks with the injury but Arsene Wenger hopes the forward can return ahead of schedule.
‘Thank you everyone for your messages,’ Lacazette posted on Instagram.
‘I will be not on the pitch for few weeks because I feel pain on my knee, the surgery went Well
‘A good recovery before come back stonger #Coyg #BeTogether #TeamLaca’
Wenger believes Lacazette’s knee problem may have been the reason for his poor form in recent weeks.
‘Lacazette had knee surgery and he won’t be available for the Europa League game unfortunately,’ Wenger told beINSPORTS.
‘He got a surprising swell of the knee after the game against Tottenham and he needed surgery very quick. He’ll be out for the next four to five weeks.
‘It’s a massive blow for us and we have to find a solution and nobody could predict that.
‘Football does unpredictable things and it’s always a good opportunity for someone to step in and do well.
‘Lacazette is down. I think he recently must have felt something in his knee. Maybe that’s an explanation as to why he wasn’t scoring as many goals as he’s used to.’