On 30 June 2016, it was announced that El Mahdioui had signed a three-year contract with Eredivisie side ADO Den Haag.[5]
AS Trenčín
In June 2017, El Mahdioui signed a three-year contract with AS Trenčín.[6]
Personal life
Born in the Netherlands, El Mahdioui is of Moroccan descent.[7] On 12 March 2015, when El Mahdioui played in the youth academy of Ajax, he was arrested along with teammates Samet Bulut and Zakaria El Azzouzi for assaulting a plainclothed policewoman. The officer suffered shoulder injuries and various bruises. She later filed charges against the three players.[8] A day later, Ajax announced in an official message that they had suspended the players.[9] Later that week, El Azzouzi remained the only suspect in the case. El Mahdioui was allowed to make appearances for the Ajax A1 youth side again after serving a month suspension. As punishment, he had to inform the youth players of Ajax together with Bulut and El Azzouzi.[10]