The midfielder still had a year to run on his deal with the Giallorossi but he has intimated that it was made clear to him that his time in the Italian capital was up
It emerged on Thursday that the Brazilian had had the final 12 months of his contract with the Giallorossi cancelled by mutual consent, thus freeing the player to join Japanese outfit Cerezo Osaka on a one-and-a-half-year deal.
However, Simplicio has now intimated that he wanted to remain at the Stadio Olimpico.
"I have always tried to honour my contract with all the teams I have played with and I wanted to do the same here," the 32-year-old told Centro Suono Sport.
"But the new management's project has taken away this facet of my career.
"However, I respect it [the decision] and thank you all. Indeed, I wish them all the best. I thank all of Roma. It was a great pleasure to wear this shirt.
"The best memory I have is definitely scoring in front of the curva in the derby [in January of last year], a great satisfaction that I will carry with me all my life."
Simplicio, who has been capped once by the Selecao, joined Roma on a free transfer from Palermo in the summer of 2010.