The reason we got a caretaker/interim manager last time (Ole in late 2018) was to bring a feel-good factor back to the squad and "let the shackles off them" - freeing them from apparent tactical burdens.
Now it would seem we want someone to do the opposite - to instill a direction, discipline, increase the pressure on the players.
Who is that person who is going to do that temporarily?
There's no way it can be Fletcher, for example - in that case we'd be getting someone in who's more out of his depth than Ole.
And whoever we bring in as interim will think they have a chance of getting the job permanently like Ole. And knowing the club, they'd probably do that if they managed to get a good run of results.
Imagine we got Favre as caretaker, for example - and he got us finishing top 4, UCL semis, got some good results, one or two bad ones, but mostly improving and getting consistent - will the club hold out and move for Ten Hag in the summer, or get giddy and give Favre a contract?