The fact that they chose him as an Interim manager until the end of the season speaks volumes. Chelsea are probably seeing beyond him for the next main manager. The current problem at Chelsea I think is the lack of patience. A manager who wants to build a team with his own philosophy needs time and at Chelsea, they don't care about giving someone enough time.
We did give Graham Potter time and look at the position it has gotten us. We trusted the process and now we won't be playing champions league football as tio 4 is now an impossible mission, we didn't win any cup competition this season and are likely to get knockout all because we trusted Graham Potter and gave him tjmi. Assuming we sacked him earlier when the signs were showing how aceragyhw was, we would had been in a better position than where we are. Chelsea isn't a patience club and that has been our strategy for years nwi and it has worked for us but the only time we decide to have patience, look at where it has left us, we aren't even in the tip 10 position.
There's rumour of another potential manager to take over from Frank Lampard; Chelsea consider return for Real Madrid boss Carlo Ancelotti - sources
Chelsea has been linked with so many past managers like Ancelotti, Mourinho, Conte etc but still majority of the fans like myself still would love to see Julian Nagelsmann coaching the players come next season and that's if Frank Lampard second return becomes disastrous.