Indeed, I heard that Messi wanted to go to Barcelona because of the family's request. But another factor is the pay cut from PSG and fans who are not friendly with Messi's current state. I heard Messi's salary will be cut by 25%, this is to remain eligible in FFP. But this is only a rumor. I myself find it strange if Messi comes back. They have started to come out of Messi's shadow with young players who continue to develop. Signing Messi may be an instant solution to the frontline problems but it has a bad impact for the long term.
Yes, his wife and children want to return to Barcelona because it is difficult to adapt to life in Paris, but on the other hand, Messi's father says that Messi will stay at PSG, but this is only temporary. As for the matter of cutting wages apart from the FFP policy, it turns out that another reason is because last season PSG experienced a financial deficit which resulted in cutting the salaries of several of its star players.
It looks like Messi's time at PSG won't be long, maybe only until this season ends, and there are rumors that a wealthy club from Saudi Arabia, namely Al Hilal, is ready to pick up Messi with a higher salary than Ronaldo. But to be clear, I don't know if Messi will take this golden opportunity or prefer his family to return to Barcelona.