Arsenal are riding high in the Premier League and Champions League, and are about to be boosted by players returning from injury, but Mikel Arteta still has a problem to solve

It is a good problem to have for Mikel Arteta , but a problem nonetheless. Arsenal are sitting top of the Premier League and Champions League. If they beat Chelsea on Sunday, they can create a nine-point gap at the top. And yet Arteta still has issues on his plate.

One of the reasons Arsenal have been so impressive this season is their work in the summer transfer window, when over £250million was spent and eight players arrived. The business done by sporting director Andrea Berta strengthened Arteta’s squad, leaving him with at least two top-quality players per position.

That has been absolutely crucial, with

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