Manchester United cannot sign Talisca this summer because he will play for Besiktas next season.
Club president Umut Guner has declared that his club have activated the clause to keep the player on loan from Benfica for a second year.
The 23-year-old was heavily linked with a move to Old Trafford but he has to wait to fulfil his dream of playing under Jose Mourinho.
"There is no deal with Manchester United or anyone else in place," Guner told Hurriyet.
"We agreed to a two-year deal with Benfica. The loan did have a clause that the option [for a second year] had to be activated, which we did.
"Talisca will stay at Besiktas on loan for another season. Reports claiming that he can be signed for his €25m release clause are false, he has a deal with us.
"If a club wants to sign him now they will have to wait another 12 months."
