The MLS club have met with the Dutch midfielder and his representatives, but reports of a deal being offered appear wide of the mark.
Van der Vaart, 32, is out of contract with Hamburg in the summer and, after being dropped to the bench for the club’s past two matches, the Hamburg Morgenpost have reported that the chances of an extension are all but over.
Bild reported at the weekend that Sporting KC officials had travelled across the Atlantic to hold talks with the Dutchman, with Heineman sending out the following tweet:
Gonna go watch rvdv Saturday. Hopefully it's nice weather.— Robb Heineman (@RobbHeineman) February 26, 2015
Former club Ajax have also made their interest in Van der Vaart known in recent weeks, but Bild have claimed that the MLS club have now put a €4.3 million-per-season offer on the table – a deal which would make him one of the league's highest-earners.
Those reports seemed to have jumped the gun, however, with Heineman responding with the following after seeing rumours gather pace:
had productive disc w rvdV, family and representatives this weekend. We didn't speak about money in any detail and the report is incorrect— Robb Heineman (@RobbHeineman) March 3, 2015
Nevertheless, with talks now confirmed to have taken place, and the midfielder said to be interested in a stateside switch, one wouldn't want rule out a move happening in the near future.
Returning to Hamburg from Spurs in August 2012, following a previous spell between 2005 and 2008, Van der Vaart has since scored 18 times in 75 total appearances for the Bundesliga side, while also adding 21 assists.
Named club captain for a second time in April 2013, the Netherlands international has put in some solid performances this season from a deeper midfield role, grabbing five goals in 17 games, but ongoing calf and fitness issues have seen him complete a full 90 minutes on just three occasions.
That said, having come close to making Louis van Gaal’s World Cup squad in the summer, before being forced to withdraw injured, there are good reasons to believe that the ex-Real Madrid star would prove a big hit in MLS, where his creative qualities could see him thrive in the attacking third.