Real Madrid captain Iker Casillas admits a move to MLS is attractive.
Casillas' current deal with Real runs to 2017.
"I wouldn't be able to leave Madrid and sign for a club that competes against them. But maybe I will look for a new adventure in different and growing league like the MLS," Casillas told the Wall Street Journal.
Casillas also believes that moving to a different league would give him a greater appreciation of his time at Real Madrid: "I would like the experience of a different kind of football and if that came tomorrow it would allow me to remember and value the time I have spent at Madrid."