Arsenal beat fellow Premier League side Chelsea to the signature of the 16-year old, and are only eligible to pay £500,000 as a form of compensation for the training costs incurred by the youngster during his stay with the Dutch giants.
Mr. Leo Beenhakker, has explained why they couldn't avail themselves the opportunity of keeping the promising youngster at Holland, by means of offering the kid a contract earlier.
The Mirror quoted Mr. Leo as saying: "We did what we could do by offering the kid a contract on time. But he wanted to wait, again this is his right. That he now goes to Arsenal, means that we only get a training allowance.
"This is the story of (Chelsea defender Jeffrey) Bruma, he was also a great talent that unfortunately never played for us, I treasure Ebecilio highly."