Olhats had been a personal adviser to Griezmann from his days with Real Sociedad through to last year, before they agreed to part ways.
He told Mundo Deportivo: “Other players and friends told him that his game would adapt very well to that of Barça, tiki taka and all that, but I don’t like his performance.
“It hurts me because I know what he can do. He can give so much more and he says nothing. He tries to do without saying anything. A month has passed, then a second, and he has understood that he is not the boss, but now he deserves, because of his attitude and his talent, to have a little more consideration.”