Chief executive Domingos Soares de Oliveira warned Manchester United that offers below €120m will not be accepted for Benfica star Joao Felix.
The future of 19-year-old Felix is set to become one of the big sagas of the summer transfer window following his breakout campaign at Benfica.
The Portuguese forward provided 15 goals and nine assists in 26 appearances to help Benfica win a 37th Primeira Liga title.
Felix also became the Europa League’s youngest hat-trick scorer since Sergio Aguero in 2007 during Benfica’s quarter-final first leg against Eintracht Frankfurt last month.
Now United, Manchester City and Juventus are expected to compete for the highly-rated Felix this summer.
In fact, it’s been alleged that United are already plotting a €100m bid for the teenager.
But De Oliveira made it clear to all interested clubs that unless Felix’s buy-out clause of €120m is met, then no offers will be entertained by Benfica.
“The goal is to keep the squad. If someone hits 100 million for Felix, the intention is not to sell,” he told TVI24.
“100 million is a lot of money, there has never been a player sold for that amount in Portugal, but the goal is to win on the pitch and we will do everything in that direction.
“Today, if they do not meet 120 million, the player stays.”
De Oliveira added: “I think the president still has the intention of reviewing, but on the other side there is the player, the entrepreneur, the family.
“What we have to do is to anticipate, looking at the potential of the player, are try to persuade the other party.
“There are talks and rumours, it is true that the biggest European clubs have interest, but no proposal has come to us.”
Felix was named in Portugal’s 23-man squad for the UEFA Nations League on Thursday, despite having never played for the senior team.