كتب : Sherif Tarek
Youssef's previous monthly wage was EGP 70,000, which made him the most expensive Egyptian coach in the country.
His new contract is believed to include a 10% salary increase.
Police, who are playing at the top-flight for the second season running, lie sixth in the league table with 40 points.
Youssef was approached by several Egyptian clubs, including Petrojet, but he preferred to stay put.