Graham Potter become Chelsea manager when Primer League running few weeks not problem yet because Chelsea have completed squad with star player, but first time become Chelsea manager on September 9, Graham Potter still make Chelsea in underperformance condition right now. Comparison with experienced have by Graham Potter I think there are still have many favorite manager who have more experienced than him.
Still not closed yet with Graham Potter chance bring back Chelsea success at Champion League this season, actually 16 round drawing most lucky with Dortmund opponent seems not really difficult and I think Chelsea have large opportunity lead to next round.
Sorry at this time if Chelsea's performance looks unstable, it is clear that Dortmund has plus points because they have played consistently. And if Chelsea still can't determine which direction in terms of management, whether players or coaches are not fully supported, then Dortmund will easily make Chelsea falter later after this break is over.
Therefore, Chelsea still has time to fix all the internal and external gaps that occur. Chelsea is currently in a fairly indecisive condition.