Bhubaneswar, Nov. 29 -- Portugal star Cristiano Ronaldo has put himself on the market with his explosive pre-World Cup interview that led to the termination of his contract with Manchester United.

As a free agent, the 37-year-old football star now has the chance to impress potential suitors and prove that he can still perform on the highest level for his country in Qatar. His future may well depend on his World Cup performance after failing to secure a transfer to a Champions League club in the summer.

Midway through the season, his options look even more limited if he is set on playing in the knockout stages of European club soccer's top competition when he returns from the World Cup.

The Champions League is now down to the last 16 te...