Matri has struggled to make an impact since his arrival from Juventus.
"I wanted so much after 10 years to return to Milan, my favourite team, the one where I grew up and that I have always cheered," Matri told Corriere dello Sport.
"Despite the conditions at both Milan and Fiorentina, it was destined not to be my lucky year. I also had many chance in which to score, some I messed up badly, I could not believe it myself when I saw the ball not go in the net."
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