Ronald Koeman says he has "no interest" in further speculation over Lionel Messi's future as Barcelona battle for the LaLiga title. (More Football News)
According to TNT Sports, Paris Saint-Germain are preparing an "unbeatable" contract offer to try and lure Messi to the French capital.
Messi's contract expires at the end of June, so the Barca captain could walk away from Camp Nou as a free agent.
The mercurial Argentina forward sensationally handed in a transfer request last August before agreeing to remain with the Catalan giants for the 2020-21 season.
Koeman reiterated his desire for Messi to sign a new deal, but for the time being the focus is on securing a win over Granada on Thursday that would move Barca top of the table.
The Barca boss said in a press conference on Wednesday: "I am not interested in what has come out because I do not know if it is true and because I hope he continues with us.
"I have said several times that it has to end here, but it is a decision that he has to make."
Atletico Madrid's defeat at Athletic Bilbao on Sunday has given Barca the chance to take a one-point lead at the summit by beating eighth-placed Granada at Camp Nou.
Koeman does not see his side as favourites to be crowned champions as his side prepare to try and leapfrog Real Madrid and Atleti.
The former Netherlands defender said: "The team that goes first is the favourite and we are not the first."
Koeman says there is no chance Barca will get ahead of themselves in their quest to dethrone Real Madrid with six games to play.
"I have not seen the players thinking that the job is done," he added. "Now we may be the favourite according to many people, but we do not think that way. We know the difficulty of winning the games because all the rivals play for something.
"I've learned that you have to go game by game. You don't have to go crazy for the possibility that exists if you win. The important thing is tomorrow and being prepared for a difficult game."