The 24-year-old has scored 19 goals in 25 appearances since moving to Anfield from Chelsea in January.
"He's got a great touch, is very strong on his left side and his right side, he's got super pace - once he's away, he's away, you're not catching him," Rodgers told the club website.
"He's clever in his movement and his runs, he's a good footballer; he drops into spaces, picks up the ball, sets the game, spins. He's also got an eye for goal.
"The area that he's looking to improve on is his heading, as he showed last week away at Sunderland. He's a boy who I still think there's a lot of improvement to make.
"When he does, I think he can prove to be one of the top strikers in European football."
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