The 29-year-old has failed to make an impact at Eastlands since joining City from Blackburn in a £17.5million deal in the summer of 2009.
“Competition for places is great and I’m working every day to try and convince the coach, but I’m still not getting picked,” he told Spanish radio station Cadena Ser.
“I’m not getting the playing time to convince anybody and my priority is to leave in the January transfer market.
“I’m 29 and still hope to fulfil my dream of playing in Spain. It is the dream of most South American players, hopefully it will happen.”