Barca will never go into the full rebuild people think they should.
Doesn't matter if Messi stays or not. The money simply isn't there. No one want a full rebuild. Not players like Frenkie, Ansu. You really think they will stick around for a full rebuild lasting 2-3 years where we'll suck ass? Not Laporta because his job hinges on Barca being good and not bad which a full rebuild means. Not the fans no matter what some of the guys in this forum say or claim because once the team starts losing or performing poorly the very same people go batshit crazy and lose their shit.
The goal is to remain competitive or become more competitive by replacing parts of the team from year to year. If you're lucky you can become a CL contender within a year or two if you hit on all your sales and incoming transfers.
If not then....well it'll just take more time.
I don't understand what some people actually expect or think a rebuild means? It's like they think they're playing FIFA Career Mode where you can just sell a bunch of players and start over again if shit gets bad.
It literally doesn't work like that.
Now if we can sign a CB and replace Pique that way, and also sell Alba and replace him with a new player that's as good or marginally worse, but doesn't lose his shit in big games....you've already achieved a lot when it comes to your rebuild and potentially being much better.
Now whether that happens or not remains to be seen, but we're not even in july yet.