Iker Casillas made over 700 appearances for Real Madrid
And Casillas, who left the Bernabeu for Porto in 2015, has backed his previous side to make it three in a row.
"I hope Madrid wins its 13th European crown to continue being the club it is, the best in the world," Casillas said.
"It's incredible; they have an amazing squad. They eliminated PSG, Juventus... now all they have to do is to put the cherry on the cake.
"I continue to be a Madrid fan and I'm enjoying [watching] this Real Madrid.
“When you leave and you see that they continue winning, it gives me a healthy envy but I'm also very happy for the people who are there."
"I don't miss [Real] Madrid. These are stages that you have to go through.
“Madrid gave everything to me, the opportunity to win top titles and go to the national team. I will be eternally grateful to Madrid.”
Casillas is a Real Madrid legend, making over 700 appearances for the side and helping them win five La Liga titles.
He was also part of three Champions League winning squads first lifting the trophy in 2000.
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