If finding cover for defensive departures, experimenting with striker options, sorting out the shape of a midfield and judging returning loan players wasn't enough, Thomas Tuchel can add another positional problem to his ever growing list.
The Blues have shortcomings throughout their squad and are still expected to lose further senior players this summer as Todd Boehly oversees a squad transformation in the blink of an eye. As well as already watching Antonio Rudiger and Andreas Christensen leave for free, the Blues are preparing to see club captain Cesar Azpilicueta and Marcos Alonso make decisive moves for their future in the coming weeks.
football.london understands that deals for Manchester City pair Nathan Ake and Raheem Sterling could both be completed soon, with the latter agreeing personal terms with the London club. This doesn't solve all of Chelsea's issues though, as they are still desperately attempting to make progress with key defensive targets, Jules Kounde, Matthijs de Ligt, and Presnel Kimpembe, along with a possibly sensational swoop for Manchester United target Frenkie de Jong.
