Arsenal will be without England forward Danny Welbeck for several months after he underwent surgery on a knee problem.
The 24-year-old, signed from Manchester United on deadline day in September 2014, last played for the Gunners in April, missing both the FA Cup final and end-of-season internationals.
Despite hopes Welbeck would be able to recover from bone bruising around the knee, Arsenal announced in a statement on Thursday the player had needed an operation and was now set for an extended spell of rehabilitation.
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It will no doubt infuriate fans that the Gunners are now left to rely on Olivier Giroud and make-shift striker Theo Walcott.
Welbeck scored eight league goals last term - and also scored a stunning hat-trick in the Champions League against Galatasaray.