Dutch Eredivisie champions AZ Alkmaar will not be letting their manager leave and take up the role as Chelsea boss.

Louis van Gaal is on a shortlist of potential managers to be targeted by the Blues but Alkmaar have confirmed he will remain at the club next season.

"Louis is under contract until 2010," said Alkmaar chief Dick Scheringa.

"A move to another club is not negotiable.

"I have no fear because Van Gaal is a man of principles who always respects his contracts.

"We want to play in the Champions League with Louis.

"A transfer of our manager is impossible. Only holding several posts concurrently will be allowed."