Sergio Aguero doubts Lionel Messi will leave Barcelona for Manchester City.

Aguero and Messi are close friends and Argentina teammates.

Messi has often been linked to a move to Manchester City.

City goalkeeper Willy Caballero said last week that bringing his fellow Argentine to the club was "possible."

"It's very difficult for Leo to leave Barcelona, because he's played there since he was very young and it's not easy for him to think about another team," Aguergo said.

"So no... hopefully he can be here at City obviously, but of course it's always the player's decision and I think he's very comfortable and very calm in Barcelona."