Real Madrid legend Iker Casillas is ready to quit Porto for a move to the US.

The Spain international has decided to leave Porto next month after falling out with coach Sergio Conceicao.

And Casillas is already in contact with Chicago Fire about a move to MLS for next season, says AS.

Casillas knows the Fire's coach Veljko Paunovic from his time with Atletico Madrid and is keen on the move. The Fire also boast former Germany captain Bastian Schweinsteiger.

Casillas has also been linked with Rafa Benitez's Newcastle United, but now is in talks about moving to MLS.