Porto president Pinto da Costa says he would not trade the club's highly prized Brazil striker Hulk for any player, including Real Madrid star Cristiano Ronaldo.
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Hulk, 25, has been targeted by a number of clubs around Europe after an impressive season in Portugal. He, along with Radamel Falcao, Alvaro Pereira, Joao Moutinho and Rolando have all been heavily linked with moves away from the Estadio do Dragao, but da Costa says it would take a monumental offer for the Portuguese champions to let go of their stars.
"It may sound like a heresy, but I would not trade Hulk for Cristiano Ronaldo. It is my opinion, perhaps the coach will say different," he told Porto Canal.
"If we consider Ronaldo's price, we can consider that it is possible that someone pays €100m for Hulk."
The Porto boss believes there are few clubs who could provide the funds needed to buy the club's other striker Falcao, but Atletico Madrid are understood to be interested in the Colombian following the departure of Sergio Aguero.
"If any club were to pay for him, they would have done it already," he explained. "But there are not many clubs who spend that kind of money on one player: there is Real Madrid when they want it, Barcelona after they discuss it a lot, Chelsea, now Paris Saint-Germain and Manchester City.
"When I read about Atletico Madrid's interest, I can only laugh."
Da Costa also scoffed when asked about Benfica's €8.6m sale of goalkeeper Roberto to Real Zaragoza, saying: "Those are bulls**t millions, ours are real millions."