"It's a very unfortunate situation and I'm sorry it happened this way. I was really looking forward to playing here," de Jong told the club's website.
According to Debrecen, the decision to terminate the two-year contract was made by mutual consent.
27-year-old de Jong, who has played 24 international matches, has been injured in recent years and has missed several championships due to back problems.
According to Debrecen, complications have arisen, making the healing process more difficult, and Daniela de Jong will now continue her rehabilitation for the back injury in Sweden.
