Modric has made clear this summer that wants to move to Stamford Bridge, but Chelsea have already seen two bids rejected and Spurs chairman Daniel Levy has been adamant that the Croatia international will not be allowed to move on at any price.
On Saturday, Harry Redknapp reiterated that Spurs are "not going to sell our best players" and Van der Vaart is delighted to hear that Modric is set to remain at White Hart Lane.
"I'm really happy that Luka is going to stay he's an important player for us," he told Sky Sports News. "Almost every day we ask him to stay and say, 'Have a great season - then you can go!'
"The chairman always said he's going to stay and there's no question about it."
Modric earlier expressed his disappointment at Levy's stance in an interview with Croatian newspaper Sportske Novosti but Van der Vaart added: "I understand that he was a little bit disappointed but in a few weeks he's going to be happy here."