And the German No1 insists his side will use it to boot the winger and Portugal out of Euro 2008 in tomorrow's quarter-final.
But United star Ronaldo hit back saying: "The reason he knows me is because I keep knocking goals past him.
"We know his and Germany's weak points too - and we are going to exploit them.
"This is a massive match. The team that plays better will win. I'm confident it'll be us."
Ronaldo netted a penalty in United's 2-1 win over Arsenal last season.