That was my problem. I am a special footballer and I need to be happy when Im playing.
That was the case at Real Madrid but never at City.
Robinhos appearance in Manchester on the last day of the summer 2008 transfer window sent shockwaves through football and heralded Citys arrival, in financial terms at least, at the Premier Leagues top table.
But the relationship between player and club never gelled and, despite assurances to the contrary given by the City hierarchy upon his arrival, Robinho believes the club still trail United.
He said: Perhaps I should never have left Real Madrid.
My destination was Chelsea with Luiz Felipe Scolari, but at the last moment City appeared and I accepted. I did not decide the transfer. Correspondence is always between clubs and I am not responsible for what anyone will pay. But Mark Hughes called me and insisted I joined the club. He was decisive in my move.
At the beginning it was positive, but England is a hard country and I had problems adapting.
Having Elano and Jo in the squad was a real bonus. They helped me to adapt but then Elano left I still dont understand the motives behind his exit.
I do not understand why people said things about us.We all demonstrated our quality in the team, and Elano and I were both then in the Brazil side.
Perhaps Hughes did not understand how best to use us both in his squad.
After that, Mark left and I dont think that Mancini had confidence in me. Going on loan to Santos was the best solution because, if Id stayed at City, I would not have played in the World Cup. The loan was very successful. I recaptured my love of football, won a title and confirmed my place in the Brazil team. It was an excellent experience and they tried to extend my loan, but City had made up their minds to sell.
When I arrived, the directors at City told me that, in a couple of years, we would overtake United, but the time has passed and nothing has changed.
Manchester is a sensational venue for football but an awful place to live ... the winter, the cold and the dark nights. Its very hard for a young Brazilian.
The Premier League is one of the best in the world, without a doubt. The stadiums are always full and the atmosphere is incredible. But not every footballer is able to play in England. The character can be difficult for a foreigner.
The best stadiums are Anfield and Old Trafford because of their histories, and my best memories will be my first goal for City and how happy everyone was with me, and the support City fans gave me during my stay.
Robinho denies there were any problems between him and Citys other big-name stars.
He said: People spoke about jealousy towards Carlos Tevez and Emmanuel Adebayor but that wasnt the case.
I always offered my best on the field but Mancini didnt seem to feel that I did.
He cannot wait to kick-start his career at the San Siro alongside compatriot Ronaldinho. He said: Im not trying to sound arrogant, but Robinho is not a player to sit around waiting on the bench or up in the stands.
Now I have joined up with Ronaldinho and to be with him is always a pleasure.
We have one of the best attacks in Europe Pato is a star and so is Zlatan Ibrahimovic and if everything works then we can win trophies this season.
Im a star player. I showed that in Spain but not in England. Now I hope to be successful in Italy.
