The Portuguese has suggested that the striker will not make the move to China or the USA and believes that he has proved his critics wrong with his form in England.
The Argentine's current deal at Camp Nou expires in 2018, but his Brazilian team-mate expects him to commit his long-term future imminently.
The Torino striker scored twice as Giampiero Ventura's charges thrashed their opponents, with all four of the visitors' goals coming in the first half.
A late header thwarted the Euro 2016 semi-finalists, who remain undefeated but find themselves third in their pool.
The Arsenal left-back found the back of the net for his country for the first time as Julen Lopetegui's side strolled to victory in Granada.