Josep Maria Bartomeu is convinced Lionel Messi will sign a new contract and end his career with Barcelona.

Messi and Barcelona have yet to agree upon an extension for his current deal that expires in 2018.

"I believe we've got a team with incredible players, all of them," Bartomeu said at the announcement of a lucrative four-year sponsorship deal with Japanese technology company Rakuten. "There is nonetheless a leader of course, Leo Messi, he is well known and popular all over the world.

"We're all convinced, we're all positive Leo Messi will end his sporting career in Barca. All the members of Barca believe this is how it has to be, because he is the player that in the last few years has brought us sporting success.''