Zoran Tosic has completed a six-month loan move to German side Cologne, but still wants to prove himself at Manchester United.
Tosic, a £7 million signing from Partizan Belgrade last January, has not been given regular first-team football at Old Trafford, but insists he can still make an impact in the future.
''I believe I haven't had my final say at Manchester United and that my performances with Cologne will be my ticket back to Old Trafford," he said.
Tosic's agent, Zoran Pavlovic, has claimed that United rejected offers to sell the player, preferring instead to delay their judgement on his prospects at the club.
Pavlovic said: "There were some offers to buy out Tosic's contract, but Manchester United were unwilling to go for that option. Sir Alex Ferguson is obviously counting on him in the future, but for now, Tosic has been sent out on loan."
Cologne manager Zvonimir Soldo has claimed Tosic will get the playing time he requires ahead of the World Cup with Serbia this summer.
Soldo said: "He is a technically established player, is good on the offensive and can play in a number of positions. He will feature for first team action just like anyone else at Cologne."