Previously Neymar was indeed linked to Inter Miami, where it would re-establish him with Messi. So far I consider it just a rumor made by the media.
Regarding Santos, all decisions will be up to Neymar. He could return to Santos, but after that, he might have to decide to retire there. But with a short contract with Inter Miami, maybe it could be done and after that, Neymar could strengthen his original club Santos, and retire there.
Neymar's current problem is his injury which is very easy to recur. He must maintain his fitness and focus on recovery to be confirmed to be fully recovered.
The problem is that the injury suffered by Neymar could make the club reluctant to recruit him and maybe Inter Miami would be much more likely to maximize the purchase of other players than Neymar. Regarding the issue that is developing regarding Neymar's future, he will go to Inter Miami and maybe that is just a rumor made by the media, although it does not rule out the possibility that Neymar will reunite with Messi or Suarez. Another option is to return to Santos and perhaps the problem is the salary that they may not be able to provide as Neymar wants. There is still a lot of speculation about Neymar's future but if you look at his condition it may not be long before he decides to retire after considering many things.