Chambers has been man of the match every game this season. But, Mertesacker is back now and his partnership with Koscielny last season was up there with Cahill and Terry. With Arteta injured, Chambers could play CDM. The only thing is that Özil is back now so Wilshere will either be dropped or put in the Arteta role. Wilshere needs to prove himself and Chambers has been on fire. What do you's think?