In order to want to sign Messi again, Barcelona are willing to lose 11% of broadcasting rights because they will sign a contract involving La Liga and CVC Capital Partners. I don't know if it's the best chance for Messi to wear the Barcelona jersey again, but yes I think he still really wants to do it.
Messi is worth more than any broadcasting rights but the PSG and Messi deal is a done deal they are expecting him to sign today. If you are a barcelona fan I would not get your hopes up about signing messi again.
Barcelona management is coming up with new dramas. Didn't they know the rules of La Liga before? They could sell girzmaan or Dembele if they wanted. They did not do that. They don’t actually want to pay Messi his high salary. If Messi leaves again, the popularity of Barcelona will decrease, they are doing so much drama to maintain this popularity. Messi will not stay in Barcelona, he is to go to PSG.