Iker Casillas is awaiting medical clearance before making a decision on his future, according to the goalkeeper's agent Carlo Cutropia.
The Real Madrid and Spain great was welcomed back to Porto's training ground on Monday, exactly two months on from undergoing emergency surgery after suffering a heart attack during training.
He returned home five days later and is now on the mend, but Casillas remains unable to take part in training and is waiting on clearance from his doctors before returning to action.