I don't think Sinatraa is gonna come back for a while, most likely scenario being the end of this year during roster shuffles. I'm quite sure that Sinatraa said something about wanting to be in a Tier 1 team(or maybe he said he just wanted to be on Sentinels, but it was something like that), the orgs that wish to risk their reputation are much smaller probably, to jump on this kind of opportunity. Maybe they will allow him freedom to build the roster, but 100t, V1, and Xset took all the Free Agents I really think are the best. Even if he says he has been getting offers, it's more likely to be smaller orgs, or maybe Rise or FaZe.
Wait actually Rise and FaZe exist, well I guess I am wrong rip.
I would expect it more likely that he will get signed during a roster shuffle before LCQ if there is one this year when teams are desperate.
Orgs aren't just in Valorant, and big ones especially, I don't think a lot of them want to risk their rep for a smaller game, unless they really believe it will add just what they need.