Arsenal manager, Mikel Arteta, is adamant his team will beat Chelsea if they replicate their performance against Inter Milan.
The Gunners lost 1-0 to the Serie A side in the Champions League on Wednesday night.
It was their second consecutive defeat, after they were beaten 1-0 at Newcastle United last weekend.
Hakan Calhanoglu's controversial penalty just before half time proved decisive at San Siro.
Arteta now must pick his players up ahead of a Premier League trip to Chelsea on Sunday.
