The league leaders "don't know the extent" of the issue yet but the defender was forced off 30 minutes into their win against Wolves.

Ben White’s injury adds to Arsenal’s defensive woes with Gunners already without Gabriel and Cristhian Mosquera

LONDON -- Mikel Arteta has warned Arsenal 's "horrible defensive habits" almost cost them victory against Wolves. The Gunners moved five points clear of the top of the Premier League but only after a fraught and nervy performance at Emirates Stadium against the division's worst team.

By contrast, the Gunners have the best defensive record in the league having conceded just nine times in 15 matches and face a Wolves team who have scored just eight. The Old Gold will be celebrating every shot on target, let alone a miraculous goal.

Arsenal vs Wolves: Stoppage-time deflection seals 2-1 thriller at the EmiratesArsenal left it late but secured crucial 2-1 victory over Wolverhampton

Arsenal extended their lead at the top of the Premier League to five points by labouring to victory over Wolves. The Gunners squeezed past the side sat bottom of the league in a dramatic end to the game at Emirates Stadium. Tolu Arokodare thought he had rescued Wolves a point when he cancelled out Sam Johnstone’s own goal in the 90th minute.