NEW YORK — Kaka showed why AC Milan wants him back from Real Madrid.

Kaka had three assists against his former team, Cristiano Ronaldo scored a pair of second-half goals and Real Madrid routed Milan 5-1 at Yankee Stadium on Wednesday night in an exhibition between two of Europe's most successful clubs.

"I'm happy to keep and I'm happy to sell if he wants to go, because a player must be happy," Madrid coach Jose Mourinho said. "If he stays, perfect for me. If he decides that the best thing for him is to go, Real Madrid will try, we will try to help. But nobody gets a diamond for free. You want a diamond, you pay for it."