Hazard, says Cahill, can be rated among the world's best players.
"Eden certainly can go to the same level as Messi and Ronaldo," he told talkSPORT. "I haven't obviously played with either, but I've seen a lot of them. Training and playing with Eden has shown me he's certainly in the same bracket.
"He's still such a young lad, but he's devastating at times when he gets the ball at his feet and runs at defenders.
"There aren't many better than him. I'm sure he'll keep improving, he's already got better from last year to this season."
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