The Paraguayan, who was sent on loan to Real Betis last season, has previously worked with Râs boss Mark Hughes at Blackburn Rovers and City and suggests perhaps the pair could again work together in the future.
"Everybody knows that I have a big respect and I am very thankful to him for the time we worked together,â he told Sky Sports.
"I hope he will have a great season and achieves his goals and who knows, I want to play and I want to do good and I want to be successful so who knows we might work back together.
"I havenât spoken to him or anybody and this might be a long way to happen. A big thing to me is to be fit as I might go to a place where I will play."