Returning to Barcelona is very possible for Messi after his contract expires with PSG, Messi can help his partner (Xavi) to repeat his success with Barcelona. At the age of 35, he can spend time with a club that has made his name big, Barcelona will welcome Messi arrival, especially since some time ago Xavi had said he really wanted Messi to be in his squad.
Messi relationship with Xavi could be one of the reasons for Messi to return to Barcelona, Xavi has also asked Messi directly to help him rebuild Barcelona.
It is unlikely that Messi returns to Barcelona. as said by journalist from Spain, Sergio Gonzalez. that Messi has a bad relationship with Laporta. At least, that's the rumor that's currently being developed. several other rumors, linking Messi with several Premier League clubs such as City and Newcastle. reportedly, they were interested in signing him after Messi's contract ended with PSG.
Even Arab League clubs like All Nassr, are interested in signing the superstar. however, the fact is that until now Messi has not said anything regarding his future, as well as PSG's management claims. So far, there have been many wild rumors that cannot be verified as true. most likely, these rumors are just rumors that are deliberate by the media.