Mikel Arteta says Arsenal need to sign a new centre-back in the transfer window after admitting Shkodran Mustafi will miss the start of next season through injury.
The German defender limped off late on during Arsenal’s FA Cup semi-final success against Manchester City following a challenge with Raheem Sterling.
Mustafi had a scan earlier this week and, speaking after Arsenal finished their league season with a 3-2 win against Watford on Sunday, Arteta has now revealed the extent of the injury.
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“It looks really nasty,” said Arsenal’s head coach.