Such is the complexity of Cristiano Ronaldo that he stated he didn't know how to feel after knocking out former club Manchester United during this past Champions League round of 16. He admitted his delight and sadness for the moment, and showed true class by not celebrating his game winning goal against the club that jump started his career. CR has also admitted he wants to return to United at some point in his career. We're sure the feeling is mutual, but we're also sure that if Sir Alex Ferguson had the chance to advance at Ronaldo's expense, he wouldn't have thought twice about it. It truly is a unique situation to be in, and a flood of emotions and memories must have been coursing through Ronaldo when he stepped onto the Old Trafford pitch.