I'll start by saying I've admittedly become more spoiled than I could have ever imagined in regard to City's success and their signings but singing Kovacic would be extremely underwhelming.
I can't recall him ever having a standout performance versus City through all the years he's been at Chelsea. Even in the CL final, it was Mount and Kante running the show through the middle. I trust Pep and the board as they hit on their signing more than they don't but this feels a lot like the Kalvin Phillips signing to me. Not to mention it's just another senior player in the middle that Foden would have to compete with. Although it's probably time I stop fantasizing about Foden ever playing centrally under Pep as it would have happened by now if it were in his plans.