Arsenal bench Alexis Sanchez for Chelsea test

Sanchez is on the bench as Arsenal make one change from last week's 3-0 win over Bournemouth with Alex Iwobi taking over from Mesut Ozil, who has not recovered from a muscle injury.

Gary Cahill returns from suspension to replace Antonio Rudiger in defence for the home side and Willian is also in from the start after the 2-1 win at Leicester last week.

Alvaro Morata returns to lead the Chelsea attack after the 6-0 Champions League drubbing of Qarabag, but Eden Hazard starts on the bench as he continues his recovery from a broken ankle.

The Gunners have lost two of their first four matches and the most recent away game prior to their trip to Stamford Bridge was a 4-0 loss at Liverpool, which reignited debate about Arsene Wenger's position as manager.

Arsenal have not won at Chelsea since October 2011 and have won two of 21 games against the established top six since the start of the 2013-14 season, but Chelsea manager Antonio Conte feels the Gunners are a threat.

Chelsea: Courtois; Azpilicueta, David Luiz, Cahill; Moses, Kante, Fabregas, Alonso; Willian, Morata, Pedro..subs: Caballero, Christensen, Rudiger, Zappocosta, Bakayoko, Hazard, Batshuayi.

Arsenal: Cech; Koscielny, Mustafi, Monreal; Bellerin, Ramsey, Xhaka, Kolasinac; Iwobi, Lacazette, Welbeck..subs: Ospina, Mertesacker, Maitland-Niles, Elneny, Sanchez, Giroud, Walcott.