Frank Leboeuf has expressed his concern after Chelsea's "completely abnormal" display against Sevilla, highlighting a lack of inspiration in both midfield and attack.
Chelsea welcomed Sevilla to Stamford Bridge for their first Champions League fixture of the new season on Tuesday night, having been drawn alongside the La Liga outfit, Krasnodar and Rennes in Group E.
Frank Lampard's side were ultimately unable to hit the ground running as they allowed last season's Europa League winners to dominate possession in the first half, with summer signing Edouard Mendy keeping the scores level by producing a superb save to keep out a deflected header.