The Barca legend is entering the final weeks of his deal which expires on June 30, and reports have previously suggested he is close to signing a two-year extension.

However, negotiations have not been completed just yet, but Laporta indicated he is calm about the situation.

"He wants to stay," said Laporta, speaking at the presentation of the TV3 documentary about Messi.

"I do not contemplate a no. But it isn't easy.

"We'll do what we can."

Should Messi prolong his Barca career it would represent a remarkable end to the past 12 months, in which the 33-year-old sent shockwaves through world football by declaring he wanted to leave before agreeing to stay.

"There is no need to seduce him," Laporta said.

"He is determined, if there are a series of circumstances, to stay."

Messi is on international duty with Argentina at the Copa America in Brazil, scoring a free-kick in Monday's 1-1 draw with Chile in their tournament opener.

And Laporta revealed Sergio Aguero, Barcelona's recruit after his Manchester City exit, is doing his bit to ensure his national teammate commits to Barca.

"Kun Aguero tells him every day: 'Sign that, we will play together'," Laporta said.

"In economic terms, he (Messi) has made it very easy, but financial fair play is another battleground."

Messi finished top scorer in La Liga last season with 30 goals in 35 appearances and is Barca's record scorer with 672 in all competitions.

Australian Associated Press