Arsenal welcome back duo for Chelsea trip but Per Mertesacker set to miss out

Arsene Wenger has revealed Per Mertesacker is a doubt for Arsenal's clash with Chelsea - but Aaron Ramsey and Hector Bellerin are available.

Mertesacker is still not fully fit after missing his side's last three games through ilness and looks unlikely to feature at Stamford Bridge.

Wenger will, however, welcome back Bellerin and Ramsey after the duo were rested for the midweek Champions League clash with Dinamo Zagreb.

"We have no injuries. Ramsey and Bellerin, who we left behind [for the trip to Zagreb], we can integrate into the squad again," said Wenger.

"Mertesacker is still a bit short and I have to decide that today [if he will play]. He has had an illness."