Sydney FC chief executive Stefan Kamasz says Korean side Chunnam Dragons have made no official offer for midfielder Simon Colosimo, despite reports linking the former Socceroo with a move to the K-League outfit."We are always willing to listen to acceptable offers for our players from other clubs, but we want it be to done through the right channels," said Kamasz."At the moment there has been a lot of talk from agents but nothing from the club in Korea and we want correspondence from them before any permanent transfer can take place."I know Simon and his agent are very keen for the move to go ahead, but we just want to see a letter with a formal offer from the club who want to buy him."Colosimo has a clause in his contract, which has one year to run, allowing him to go out on loan at the conclusion of the A-League season.He missed much of the season through injury and the midfielder's agent Leo Karis said he is keen to continue playing no Sydney has missed the A-League finals.He also disputed Sydney's claims there had been no formal offer."Simon is very keen to pursue the move and Sydney have received a formal offer from Korea and I am not sure why they are claiming otherwise," Karis said."I have seen a letter of authorisation from Chennum Dragons saying a Korean agency is working on their behalf to sign Simon."I have been copied this authorisation and Sydney have seen also it, this is common business practice in football."Hopefully the situation will be resolved soon as Simon is very keen to explore the option of playing in Korea."