The Ajax Amsterdam manager fears that the club’s number 1 will eventually leave the club for Manchester United this summer
The Netherlands international has been hotly linked with a move to Old Trafford in recent weeks and despite the fact that David de Gea could be set to stay at the club this season after the Red Devils told Real Madrid that they will not do business if the Spaniards can’t meet the asking price, could eventually be reunited with Louis van Gaal and Daley Blind.
And De Boer, who has been desperately trying to keep a hold of his number 1, fears that Cillessen could eventually leave the club.
De Boer said, “For us it would be a disaster if that’s going to happen because it’s already very difficult to find a good goalkeeper, especially if you have the best goalkeeper in Holland,”
“We want to keep him and he wants to stay, but if Manchester United come with a bag of money it can be difficult.
“We have to wait but the transfer period still has a long way to go.”