Van Dijk is one of the best central defenders in the world, and the performances of the former Celtic star for Liverpool so far this season have been superb.
The 27-year-old Netherlands international is solid at the back, and the former Southampton star has made Liverpool a much better team than they were before his arrival at Anfield.
Babel is a former Liverpool player, and the 32-year-old winger also plays with Van Dijk for the Netherlands national football team.
The Dutchman believes that Van Dijk can still improve, and told The Times: “Virgil has definitely developed over the past few years.
“I think he can get better by 30 per cent. I still feel he plays on 70 per cent. He can do much more. He can be fast if he wants.”
Fulham will take on Liverpool at Craven Cottage in the Premier League on Sunday afternoon.
Jurgen Klopp’s side are challenging Manchester City for the Premier League title this season, and given the quality of players the Merseyside outfit have, they should not have any problem in getting the better of Fulham.