Comment and Analysis
The Real Salt Lake forward will miss the start of the MLS campaign after suffering the injury in training.
The Swede's penalty was decisive in Sunday's 1-0 win against Saint-Etienne, but if the champion is going to defend its crown, it needs much more from its star man.
The former Bayern man has been a disaster since moving to Florence, but has now hit three goals in his last two games while virtually gifting Juventus the Scudetto
COMMENT: The Gunners are through to the fifth round with many of their rivals eliminated or facing replays but, they lapsed into bad habits of old against Brighton on Sunday