Real Madrid icon Ronaldo Nazario concedes Zinedine Zidane is "experiencing problems" this season.
Ronaldo won the Champions League with Zidane at Real and feels for the Real coach.
"Real does not play very well, but the Champions League changes motivation. Zidane is experiencing a lot of problems this year. It's going to be a complicated match, because PSG plays very well and has a very offensive attacking trio.
"These are two big teams."