Real Madrid can buy players until September 2 but United are unlikely to sanction the sale of one of their best players with no prospect of signing a replacement.
And he understands that Los Blancos have even had an offer accepted 22-year-old.
After detailing the previous reports, Bechler explained: "From what I've learned, the thing goes further: there is already a proposal accepted by the Dutch club and player".
But Van de Beek refused to sign a new deal and is now waiting to see whether Real Madrid make a move for him in the coming weeks.
Eden Hazard, Luka Jovic, Eder Militao, Ferland Mendy and Rodrigo have all joined for fees in excess of £40 million. "Trading has been around for days", he wrote on Twitter. The tweet also adds that the player has in fact said yes to the terms and conditions of Real Madrid and the deal could well be made official within the next few days.
Fresh reports this week claimed that Real have only turned their attentions to Van de Beek after being frustrated in their attempts to sign Manchester United midfielder Pogba.
Arsenal beat PSG, Napoli to sign Pepe from Lille
Ivorian global Pepe also holds a French citizenship as he was born in Mantes-la-Jolie, a commune nearby the French capital Paris. Arsenal manager Unai Emery said: "Nicolas is a highly rated and talented winger who was wanted by numerous top teams in Europe".
Will Van de Beek be the latest star to leave Amsterdam?
Van de Beek, on the other hand, will cost between €50 million and €60 million.
The midfielder, who scored and assisted during Ajax' first game of the Eredivisie season on Saturday confirmed that Real Madrid are in contact with Ajax.