The main obstacle in the transfer was the knee injury suffered by Kaplan, which he had also had in the past. There is uncertainty about whether he needs surgery, which could keep him out for a few months. Ajax still wants to sell Kaplan, but NEC was hesitant due to the high price tag, considering him a "miljoenenuitgave" (a million-euro outlay). Kaplan was a key player for NEC, who had loaned him in the previous season.
Verweij suggests that Ajax might reconsider a rental option for Kaplan, especially if the transfer market prices drop. NEC would have benefited from Kaplan's services, but the injury and the high price made the deal unfeasible. The Ajax watcher believes that Kaplan could have been a valuable player for NEC, especially after the winter break when prices are lower.
The transfer is now off the table, and NEC will have to look elsewhere for a new defender.