Michael Laudrup believes Gareth Bale will be worth any sum Real Madrid are prepared to pay to prise the Tottenham winger away from White Hart Lane.
The 24-year-old Wales international has been linked with a move to the Bernabeu throughout much of the summer, and Real are reportedly ready to break the world transfer record of £80million in order to secure his services.
There have been suggestions in the Spanish media the final fee for any deal could be up to £125million.
Laudrup was a fan favourite in the Spanish capital after he left Barcelona to help Los Blancos win the 1994-95 Primera Division title.
And the Swansea manager believes if Bale does leave White Hart Lane, he will be worth every penny of whatever fee is paid.
"Is he worth £100m? Who can tell? Who can tell what something is worth? Everything is worth what one club, one person, one company, is willing to pay. It's like buying a house," said Laudrup.
"We talk about it like merchandise and I don't like it, but it's fact that if one person is willing to pay so much for one player then he is worth it."
Laudrup also admits he can understand why Bale's head would be turned by the chance to play for one of the biggest clubs in the world.
"Real are a massive club. I don't know if he will go as I only know what I've read in the papers here and in Spain because there's huge interest in him," he said.
"There are three or four clubs who say they are the biggest in world but Real Madrid are definitely one of them.
"Tottenham are a big club but Real Madrid is a step more in every aspect, they have won the Champions League nine times and I don't know how many league titles. There is a lot of pressure.
"You have to have quality as a player but you also have to cope with that pressure and not everyone can do that.
"He has technical ability to play there but let's see what happens. I think he's a great player and he's already shown that with a fantastic season for Tottenham last season.
"But we are reading about some big numbers and if they are true maybe in the end he will go."
He added: "Big players want to play at the highest level, at a club who try and win the Champions League, who get to finals and semi-finals.
"There are six, eight, 10 clubs with that potential and Real Madrid is obviously one of them. All big players want to play for that possibility because it's special."