It may only be September but Chelsea already have a lot of noise to block out after a sluggish start to the season and must also find a new head coach, after Thomas Tuchel was sacked on Wednesday morning.
The transfer window has not even been closed a week and heading into the match against Dinamo Zagreb debuts were being made, the club had showed character against West Ham, and the Blues remained in the top six of the Premier League.
When boos reigned down as Chelsea came out to warm up, it was obvious some noise would be difficult to drown out in Zagreb, but when the Champions League music hit and Pierre-Emerick Aubameyang lined up for kick-off, it was difficult not to feel a sense of optimism given Chelsea's history in the competition.