Essential Questions: Is Arsenal's trip to Chelsea a must-win for The Gunners?

Ron Walker and Sam Blitz look ahead to Chelsea against Arsenal, a potentially pivotal match in the title race and a game you can watch live on Sky Sports on Sunday.

Hear also from pundits Paul Merson and Gary Neville, as well as Chelsea's Levi Colwill who describes what it's like playing under Enzo Maresca. Listen to the full interview with Colwill on this week's One on One podcast: podfollow.com/one-on-one-from-sky-sports