Adana Demirspor coach Vincenzo Montella has recalled falling out with Mario Balotelli last season.
The striker had a year in Turkey before leaving for Sion over the summer.
Former Fiorentina coach Montella told Sky Italia: "He is certainly the most unspoken talent I have met. We have established a beautiful and very frank relationship, then he had wanted to leave for two months and he constantly revealed it to everyone, from the president down.
"One day he wanted to play by force, I told him that I did not see him in the right conditions to field him from the beginning but I asked him to promise me to be there with his head if I had used him while the game was in progress. He promised me.
"But when he took over I didn't like it and I made it clear to him. But we are still in touch and I'll give him a warm greeting."