FC Porto president Pinta Da Costa has revealed in-demand coach Andre Villas-Boas has a release clause of €15 million in his contract.
Villas-Boas has been linked with Europe's top clubs after he led Porto to the Europa League and three other domestic trophies, including an unbeaten league season, but has stressed his commitment to the Portuguese side.
Da Costa is sure that his manager will be at the Dragao next season and claimed that any interested party would first have to pay a €15 million release clause.
"I do not expect the exit of Villas-Boas, there is a clause price of €15 million - but I am totally convinced that even if any club came in with the offer, he would reject the proposition,'' he told RTP.
"Villas-Boas is very committed to Porto and more so after this big season. Two days ago he also told me that if no players leave, then he will not even need any new players."
The club have already tied down striker Hulk to a new long-term deal, which also saw his release clause rise to €100 million, while negotiations are ongoing with leading scorer Radamel Falcao - whose current deal has a release clause of €30 million.
"This is being looked at," he said in reference to Falcao. "He has already showed a willingness to renew, but he has a two-year contract so I am not worried."