Liverpool defender Virgil van Dijk admits he's a fan of Manchester City striker Sergio Aguero.

Van Dijk has named Sergio Aguero as his toughest opponent - and a Liverpool star as his greatest ever teammate.

"I'm going to be a little bit biased and say one of my team-mates; I would say Roberto Firmino," he told talkSPORT.

Van Dijk was also asked about his toughest opponent and named Manchester City marksman Sergio Aguero.

He named Liverpool's incredible 4-0 victory over Barcelona in the semi-final of the Champions League as the greatest match he has played in.

And the Dutchman ensured he wouldn't upset anyone when asked for the best manager on the planet.

Van Dijk selected Liverpool boss Jurgen Klopp and his international manager Ronald Koeman.