Maybe at some point - obviously he has a v.strong connection to the club - but I don't think he'd go there under their current model.
Fabregas is a minority shareholder at Como - he has about as much power there as any manager is liable to have at any club. Why would he give that up to move to Chelsea, a club who have recently parted ways with Poch and Maresca because they refused to give them even the tiniest bit of control over transfers and the direction of the club.
If Fabregas goes anywhere this summer I think it will either be to a big club at the top of their game or a club that gives him a serious project with a fair degree of control. Otherwise he'll just stick around at Como for a few more years and hone his craft at the club where he's literal part-owner.
Imo the only way he goes to Chelsea is if they drop their entire model, start backing managers, buying experienced players and stop being this weird trading portfolio experiment.
It's for this reason I also don't think they'll get Alonso and will likely end up with someone with less experienced like Iraola, or less hyped like Marco Silva.