The Netherlands international believes that the club are currently lacking an added creative spark in their side and feels that the Roten duo would make a huge difference to Thorsten Fring’s lineup.
“We are missing a player like Arjen Robben and Franck Ribery,” he told reporters.
“[A player] who is individually strong enough to be a game changer if a decision does not work. We need players with experience and a winning mentality.
“Our goal is Europe and if you want to achieve something, you also are not afraid to say it.”
The 30-year-old also feels that attacker Heung-Min Son should stay and continue his development at Imtech Arena, despite reported interest from sides across the continent.
“Here he can develop into the best, [but] he needs a lot more experience," Van der Vaart added.