Esporte Interativo claim Messi has told Barcelona chiefs he will leave the club this summer unless significant changes are made.
But Sport claim Barcelona chiefs have strenuously denied they have received any communication from Messi expressing a desire to leave and other Spanish outlets are insisting the 33-year-old is yet to make a decision over his future.
Barcelona president Josep Bartomeu is under serious pressure to step aside while manager Quique Setien is expected to be sacked.
The abysmal display in Lisbon was the first time Barcelona has conceded eight goals since April 1946 and the Catalan side ended the season without winning any silverware.
Real Madrid beat Barcelona to the La Liga title and the defeat to Bayern Munich capped off a dismal campaign.
Messi’s contract runs until next summer, but Barcelona will need to present the Argentina superstar with an impressive rebuilding plan if they are to keep their star player.
Barcelona has faced serious financial issues in recent months and may not have the funds to be able to meet Messi’s demands and overhaul the squad.
A reshuffling of the club’s hierarchy is also on the cards and the presidential election could be brought forward by a year amid mounting pressure.Bartomeu said after the heavy loss to Bayern major changes were needed to rescue the club.
‘It’s been a disaster, and now it’s time to take some decisions,’ said Bartomeu.
‘Some of them we’ve already thought about. We need to take these decisions, and there’s some others that we have to take now.
‘Today’s not a day to talk about that. Today’s a day for feeling bad for ourselves.
‘I’m not going to say right now what the changes are because some of them we’ve already thought of before what’s happened in the Champions League.
‘But this is for the week to come. Today’s not the day for that.
‘Today’s the day for feeling bad, and trying to lift our head tomorrow, and in the week we’ll talk about these decisions we need to take.’