(CNN) -- Dick Advocaat has resigned from his post as Belgium national coach, after just six months in the position.
The Belgian Football Federation confirmed on their official Web site that the 62-year-old Dutchman had resigned -- and they were now consulting their lawyers about what action to take.
A statement read: "The federation's president Francois De Keersmaecker was informed by national team coach Dick Advocaat that he was breaking his contract with immediate effect.
"The Belgian football federation will contact their lawyers to study the consequences it will give to this matter.
Advocaat took charge in October last year after it was confirmed that Belgium could not qualify for the World Cup finals in South Africa -- and had been combining the job with his role as coach of Dutch side AZ Alkmaar.
Amongst his coaching achievements, Advocaat has led Glasgow Rangers to two Scottish Premier League titles and guided Russian side Zenit St Petersburg to victory in the UEFA Cup final, ironically against Rangers.
His success in Russia has seen him linked to the national coach position, which will become vacant in June when compatriot Guus Hiddink's contract expires.