Ronaldo was eager to quit European champions Real in the summer after a bust-up with Spanish tax authorities.
And Castles says nothing has changed, despite the player remaining at the Bernabeu instead of moving elsewhere.
When quizzed about Chelsea star Eden Hazard moving to Real on The Transfer Window podcast, he explained: “You’ve got to take into account the fact that Cristiano Ronaldo wants to leave.
“That situation hasn’t changed. He’s looking to find a club that will take him.
“And if Cristiano Ronaldo leaves then Real Madrid have a lot of extra money to spend and 2) they have a hole in the squad that someone like Eden Hazard or Kevin de Bruyne could fill.
“It will be that category of talent.
“It’s a potential next world superstar that they will go for.”
The Euro 2016 winners head to Andorra tomorrow before a winner-takes-all clash with Switzerland in Lisbon at Benfica's Estadio da Luz on Tuesday.
The Swiss are three points clear of Portugal, but a victory for the hosts would ensure themselves a place at the tournament in Russia, assuming they defeat Andorra beforehand.
Friday, 6 October 2017
