Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Iker Casillas struggled to hold back the tears on Sunday as the Spanish goalkeeper said his goodbyes to Real Madrid fans before completing his move to Porto. Casillas joined Real's youth academy in 1990 and has been with the club ever since, winning 18 major honours along the way. The 34-year-old stopper was clearly emotional during his farewell press conference as he asked the Madrid fans to remember him as a 'good person' rather than a goalkeeper. A tearful Casillas struggled to read a statement during the press conference a day after Madrid announced he was moving to the northern Portuguese club.Iker Casillas will join Porto after 25 successful years with Real MadridCasillas was clearly emotional during farewell press conferenceThe 34-year-old claimed 'wherever I go, I will always shout Hala Madrid'Casillas was forced out Real Madrid by Florentino Perez, says his parents 
 Question:As of Saturday I'm no longer a Real Madrid player, now I'll be a _ player.

Porto