Mikel Arteta came in with a game plan, and defensively, it worked. Apart from the penalty that David Raya unbelievably saved, Atalanta just couldn’t cause Arsenal any problems. That is a big positive, but the huge issue that everyone noticed in Bergamo on Thursday night was how much Arsenal missed Martin Odegaard.

Arteta leaves no stone unturned when it comes to preparation, both on and off the pitch - as one of his former right-hand men explains