The 26-year-old Ivorian forward said he did not always have the confidence of his French boss but is looking forward to a new challenge in the Serie A, after being moved on from the Emirates earlier in August.
"(Arsene) Wenger, well, I think he's one of the great coaches," he said.
"He's someone I have great respect for and I'm also very happy to have been able to play for his club. Overall I just think it's his opinion.
"After five years, that's it, I'm gone. That's his opinion. I think forwards need to feed on the confidence of their managers, I would have preferred to have that chance.
"But that wasn't the case and the page had already turned.
"But now I'm totally focused on Roma and working with Rudi Garcia - for me that's the most important thing right now."
"I think I had a great time during my spell in England, especially at Arsenal. I really enjoyed playing for that club," he said.
"It's true that I did not think I would leave after two seasons, but I'm pretty happy, but I don't really agree with the thought that everything was negative for me at Arsenal.
"I reckon I could have done better if the circumstances were different, I need a lot of playing time and that's why I decided to leave the club."
Gervinho was a second-half substitute in Roma's season-opening win away at Livorno, with the capital club's next assignment a home date with Hellas Verona on Sunday.
