The Uruguay international endured a torrid time after moving to the Nerazzurri in 2011 from Atletico Madrid, scoring just twice in a mere 18 Serie A appearances.
And he has revealed that the club repeatedly turned down requests for him to say goodbye to his team-mates in a cold ending to his stay at San Siro.
"I knew I was leaving Inter. I wanted to say goodbye to my team-mates, but people wouldn't take my calls,” Forlan told Four Four Two.
"I tried to reach [team manager] Ivan Cordoba, but a club official told me some bullsh*t about tomorrow being a difficult day for me to go in and say goodbye.
"The message was clear. I wasn't welcome anymore."
Despite his struggles in Italy, the former Manchester United and Villarreal star has declared finding a new lease of life in Brazil: "Football is still my life.
"And I can look back at a sport which has been good to me, playing alongside [Luis] Suarez, [Sergio] Aguero, [Ruud] Van Nistelrooy, [Juan] Riquelme and Leandro Damiao under coaches like [Sir Alex] Ferguson and [Manuel] Pellegrini."