Alex Livesey/Getty Images
It's a travesty that the referee gets more publicity than the result of some the biggest games in European football sometimes. No doubt this game will have controversial calls and decisions.
The official for the massive tie on Sunday is Howard Webb. He has World Cup experience, and is no stranger to big matches. Hopefully it's one of his better efforts and there isn't much to discuss in post-match interviews.
Sir Alex is usually not happy with the officials in games vs. Chelsea as he launched an attack on Martin Atkinson after the Red Devils lost to the Blues at Stamford Bridge 2-1, on March 1st.
Questionable calls also played a critical role in the Champions League Quarterfinal first leg as Chelsea felt they deserved a penalty after Patrice Evra took down Ramires in stoppage time. Alberto Mallenco failed to see what was a clear penalty, thus resulting in Manchester United winning, and taking a slim lead into the second leg at Old Trafford.