Speaking to Sky Sport, Matic expressed frustration with what he described as a lack of respect from Roma’s management after being lured to join the club by coach Jose Mourinho.
He said: "When I chose Roma and left Manchester United, I accepted a one-year contract even though I had other teams. When the offer came, I wasn't willing to accept because they'd only offered me a one-year contract. Then I spoke to Mourinho, and in the end I chose Roma for him and for the fans. They told me we'd sign a contract extension in January, but at that point, no one showed up.
"In my opinion, I played well at Roma. I was told I'd get an automatic renewal if I played at least 50 per cent of the games, but that wasn't the agreement we made the previous summer. I felt like I was constantly on trial, under scrutiny. I deserved respect. At that point, I spoke to the club, saying I'd give my all until the end of the season, but that at the end of the season we'd part ways.
"I wasn't the problem, but the people who had promised me things they didn't keep. I lacked stability, although I didn't lack the love of the fans, who respected me more than the club. Before today, I'd never wanted to talk about it, but three years later I can say it, also because the directors who were there then are no longer there. I don't want to say they were unfair, but I think I deserved more respect."