^ I guess you haven't seen the twins play much. They'd tear Alves a new one before they get ripped. The only thing I'm concerned is their aggressiveness and Alves/Pedro's flopping. United have no chance if one of them gets sent off. Evra is a surefire starter though, the question is who plays right back between the twins and O'shea.
Actually, I've seen plenty of both twins and I'm quite confident that probably the best RB in the world would do quite a bit more damage than either. Alves' role on this Barca team is severely underrated because when he plays well down the right he combines so well with Messi/Pedro and leads to numerous gaps in the defense. Particularly in a big game like this where Dani's experience will tell, I would definitely back him and Pedro (who is one of the best in the world at cutting in) to rip either of
the twins to shreds if they're played up against him.
EDIT: In addition, their aggresiveness is very likely to get them in trouble against Alves/Pedro as well, so definitely would love if for some reason SAF played both the twins instead of Evra. TBH I think United's best choices at full backs would be Evra/O'Shea
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