Barcelona boss Luis Enrique claims he does not dare to predict if Lionel Messi will sign a new contract.
Messi's father, Jorge, has flown to Barcelona to take part in discussions as he looks to broker a deal that will make the 29-year-old the world's best-paid player.
Luis Enrique says any confirmation of an agreement would be a cause for celebration but was reluctant to speculate on whether the talks will be successful.
"It's good news, of course," he told a media conference ahead of Barca's LaLiga game with Osasuna on Saturday.
"I'm quite relaxed about his dad being here. The day that Messi's renewal is announced will be a day to celebrate. At the moment, I don't dare predict if he will renew or not."
Messi's contract is due to expire in 2018 and rumours of a potential transfer elsewhere in Europe have refused to die down in recent months, with Manchester United and Manchester City among the clubs tentatively linked with a bid.
Barca are expected to announce a new contract for Luis Suarez in the coming weeks, having already tied down Sergio Busquets, Javier Mascherano and Neymar.