Mikel Arteta faces major Arsenal headache that could upset signing of the season

Mikel Arteta is spoilt. The Arsenal manager doesn't just have the best two centre-backs in the Premier League , he might well have the best three. Ezri Konsa has been outstanding since his £55million move from Aston Villa , helping Arsenal keep six clean sheets in the 10 games he's started. The England international was fast-tracked into the Gunners' starting XI in the absence of William Saliba , who picked up a serious injury at the World Cup . But now Saliba is back in full training and Arteta has a dilemma on his hands.