"I don't think it's possible to prepare to face Messi," he opened up to the media.
"You just have to try to be disciplined in front of him. There will be moments when we need to be more in control of the ball, even before the ball reaches Messi.
"Once the ball reaches Messi, he'll be as usual," Riveiro added.
"A player who requires special marking, and I think he's been used to that kind of marking throughout his career, but he's part of a good collective team, with a good coach, so we'll be ready, we'll be well prepared, and we'll see what happens," he concluded.