I'm not convinced of a yellow, but think you can perfectly make the case for it. If a referee thinks this tackle was reckless (and therefore the player deserves to be cautioned), that's defendible. Within his margin of appreciation; personal opinion; etc.
Cuadrado also seems to hold back when he sees Ramos coming, so you could also see it as a case of playing in a dangerous manner ("any action that, while trying to play the ball, threatens injury to someone and includes preventing a nearby opponent from playing the ball for fear of injury").
Cuadrado also seems to hold back when he sees Ramos coming, so you could also see it as a case of playing in a dangerous manner ("any action that, while trying to play the ball, threatens injury to someone and includes preventing a nearby opponent from playing the ball for fear of injury").