I'm a United fan and I've always preferred Messi. Ronaldo is an outstanding goalscorer but he's more selfish and I don't like his temper tantrums when he's not the centre of attention on the pitch. I admire his drive and determination to be the best, his work-rate is second to none, but I've always preferred watching Messi. Ronaldo scores some great goals but he doesn't have the technical ability on the ball that Messi has, and people who can dribble with the ball and beat players are the type of player I prefer to watch. Look at the stats for confirmation of Messi's greater ability. He's only 50 career goals behind Ronaldo from 160 fewer appearances, has a better goal ratio in every competition except at international level, has more assists, more goals in La Liga, and less of his goals have come from the penalty spot. Sure, he's disappointed at international level but I've never understood the argument that a player has to win international trophies to prove their quality.
Anyway, on topic there is no way Citeh are buying him. Sanchez, on the other hand, is a realistic target imo.