Mikel Arteta praised Riccardo Calafiori after the summer signing made an impressive cameo appearance as a second half substitute against Atalanta. The Italy international has had to bide his time for opportunities since his arrival from Bologna in the summer and missed the north London derby as a result of the calf injury he picked up playing for his country a fortnight ago.

Atalanta had the opportunity to take the lead six minutes into the second half when Ederson was brought down by Thomas Partey inside the area

Mikel Arteta admitted David Raya’s astonishing double save against Atalanta was the best he has seen in his career. Raya ensured Arsenal avoided defeat in their Champions League opener by keeping out a penalty and the rebound from Italy striker Mateo Retegui.