The 22-year-old has been linked with Old Trafford after his national coach, Louis van Gaal, was appointed as David Moyes's permanent successor earlier in May.
|MAN UTD LATEST
|9/2||Manchester United are 9/2 with Bet365 to win the Premier League|
"There has been no contact recently with the Viola or with the Red Devils or with other clubs," he declared to Calciomercato.
"[Clasie] is focused exclusively on the national team. The opportunity to train daily with a great coach like Van Gaal is very important for him.
"Jordy's future will probably be decided after the World Cup."
A product of the Feyenoord youth system, Clasie – a gifted passing midfielder – has made over 100 appearances in all competitions for the Rotterdam club.