The 23-year-old revealed the allure of joining los Blancos has proved too strong to resist as he finalizes a move to the Spanish capital.
The Spain Under-21 international is on the verge of swapping the Anoeta for the Santiago Bernabeu this summer after the Blanco confirmed they had triggered the youngster's 30 million euro release clause. Even though Illarramendi stressed it was not an easy decision to leave San Sebastian after 12 years at the club, the 23-year-old says he could not resist the allure of the Spanish giants.
"I became aware of the interest while on holiday, there was contact, the only ones I spoke to were my agents," Illarramendi said. "I spoke with my people, we considered it and I thought this is a unique and irresistible offer. I feel the colors of La Real and will always be a fan, I struggled a bit to make this decision, but it is a good decision.
"I have been here 12 years and the decision was not easy, I had a hard time deciding. I want to give thanks to the directors, the coaches in the youth team, my teammates, I wish them all well."
Illarramendi will become the fourth summer recruit to join the capital club following the arrivals of Carlos Casemiro, Isco and Daniel Carvajal.