Forget our worst South American signing, Sanchez is our worst signing ever. I've seen some bad players come and go (Djemba-Djemba, Bellion, Bebe, Kleberson etc...etc...), however, they were all cheap buys who ultimately ended up being 'bets to nothing' that didn't pay off
Di Maria was a poor buy, due to his reluctance to be here, but we got most of our money back and it's not like he contributed nothing at all. Likewise, I think many newer Utd fans don't appreciate that Seba Veron was actually very decent, just never hit the heights expected, I feel mainly because SAF was never quite able to fit him, Scholes and Keane into the same team.
Sanchez has contributed absolutely nothing, looks totally shot and has upset the rest of our squad in the process due to his ridiculous wages. We can't get rid of him for the same reason AND to top it all off, he has a bumper deal lasting another 3 1/2 seasons!