As much as Graham Potter won't want to think about post-World Cup football too much just yet, when players do return there will once again be some huge decisions to make.
The manager has been quick to experiment throughout his squad with new shapes, roles and tactics. They haven't all worked, of late nothing has, but the 47-year-old is still learning about his squad and is also working with a large portion of them out injured, making it harder to balance defence and attack.
One of the decisions he made quickly at the club was to move Kepa Arrizabalaga to first choice. This was made easier by Edouard Mendy's poor form and injury both coinciding with each other and Potter's appointment. Though far from the type of keeper Chelsea can invision themselves challenging for the title with, Kepa's improvement has been one of the success stories so far.