"You can't keep him completely quiet, he always manages to have chances in a match".
Against Bayern, Ronaldo also has incredible goal return, with nine strikes in six appearances against the German superpower, with Boateng charged with stopping the Portugal worldwide when the sides meet in their Champions League semi-final, first leg clash at Allianz Arena on Wednesday, a game which is live on the eir sport pack on BT Sport 2.
Bayern Munich beat Sevilla during the Champions League quarter-final with a timid 2-1 scoreline over the two legs while Real faced a real scare when Juventus neutralized a 3-goal deficit at the Santiago Bernabeu, only to blow it away in a moment of complete madness.
Ceballos said he hoped this season would take the same course as in the years past - straight to the Champions League final.
'Real base their game around him and it's important we give him as little room as possible'.
"In front of goal, he's like a machine".
And the Bayern vice-captain has said his side will head into the match with loads of confidence.
For now, the details of exactly how much Ronaldo will see his salary increased have not been discussed but the player is believed to view the proposal positively. Left foot, right foot, header - he is in flawless control of everything he does.
"I have both positive and negative experiences with him", he added.
"You need a better referee for a quarter-final", complained then Bayern coach Carlo Ancelotti after his team had two men sent off over the two legs and Real scored goals from offside positions.
Real Madrid have used the 4-4-2 diamond formation in 19 matches across Champions League and La Liga this season and managed to win only 10 out of those matches.
"Shutting him out is only 50 percent of it, the other players are simply too good for that at this level".
Jupp Heynckes' side warmed up for the Real game with a 3-0 victory over Hannover in the league on Saturday.