Jesus Olmo's time as head of Real Madrid's medical department didn't come without its problems, the most notable of these came in the form of a heated confrontation with Sergio Ramos.
Olmo held the role between 2013 and 2017, during which time Los Blancos won the LaLiga Santander and Champions League double under Zinedine Zidane before he left that summer.
But it wasn't always smooth sailing, and things came to a head between Olmo and Ramos.
"Sergio is special, we had a very big confrontation," Olmo remembered while speaking to Ideal de Granada.
"He's a person who, like me, says things to your face.
"He did things that I didn't consider appropriate and I explained that to him.
"We each defended our position with the utmost respect, we had our differences but from there the relationship was very good."
In his time at Madrid, Olmo worked closely with Zidane, Carlo Ancelotti and Rafael Benitez.
"They were good experiences, though it's true that my team had a much bigger role than is normal," Olmo admitted.
"We spent a lot of time with the players and that can lead to mistrust.
"Coaches often prefer a more traditional model in which they can control everything, but I was at the same level as the coach.
"I created that model and defended it, but when it stopped I left."