Chelsea boss Mauricio Pochettino admits they cannot use 'dark arts' against Manchester City striker Erling Haaland today.
Pochettino was compared marking Haaland with how they handed Ronaldo when he played for Espanyol.
"Today with VAR it's impossible to stop Ronaldo," he said.
"Before we were naughty. There weren't the cameras there and you could use different strategies to stop the player.
"I wouldn't say it was easy, but now it would be really difficult. It's easier for an offensive player now because you have to be careful with fouls. Before it was a battle in every single action."
On Haaland, he continued: "We need to run faster, anticipate and concentrate and focus, try to anticipate him. Be clever in the way you're going to defend the box because he's tall. You need to jump before.
"You need to feel really good. You need to use only good tools. Before we used good tools, and not so good tools to stop the players."
