Roy Keane said it was deserved while Gary Neville said it was not. The red card given to Nani yesterday during Manchester United's second leg match with Real Madrid is the biggest topic in European football right now.
With United leading 2-1 on aggregate, Nani was given a straight red for a high footed challenge that possibly connected with Alvaro Arbeloa's ribs in the 56th minute. Sir Alex Ferguson and the Old Trafford faithful were incensed and felt it was a harsh punishment.
Real went on to score two goals and walk away winners.
Regardless of what anyone thinks, it happened, the game's over and we have to accept it.
Unfortunately, in huge contests such as these a sending off is particularly devastating. It can change the course of a match and end the dream for a team and its fan base of winning European football's greatest trophy.
Manchester United is not the only English club to be on the receiving end of a red card in a critical European match. There have been a number over the last 10 years.
Here's a look at some of the most recent red cards handed out to English clubs in the knockout rounds of the Champions League.