Atletico Madrid striker Radamel Falcao admits he could be forced to quit Spain.Chelsea are at the head of the queue for Falcao should he quit the Spanish capital, where to moved in 2011 as a direct replacement for Manchester City's Sergio Aguero.

"I have a contract for more years. Now my reality is Atletico and I cannot think of anything else," he told Marca. "I do not know what will happen in the future.

"The situation depends not only on the players and the management but also the economy of the clubs and even the country.

"I could only go by what was said by the club and they said it would be difficult for me to stay if they did not reach the Champions League.

"The future was uncertain regarding the economic issue, but it was a great effort from the team and they kept almost the entire playing staff, which speaks volumes for how well Atletico are doing."