The Spanish midfielder finally linked his future destiny with Madrid with a new contract.
According to the official website of Real Madrid, Isko signed a five-year agreement. At the moment, the player's salary is kept secret, but it is known that the contract includes a buyout option, which is 700 million euros.
The official event for journalists about the signing of the contract is to be held tomorrow.
Isko moved to Real Madrid in 2013 from Malaga for 30 million euros.
This season, the 25-year-old midfielder played three matches for Madrid in La Liga.
Earlier it became known that the contract with the "royal club" was extended by the Brazilian lateral Marcelo.