The day after Advocaat resigned as Belgium coach, the ANP agency reported him saying he could not refuse the offer from Russia, who failed to qualify for this year's World Cup finals after losing a playoff to Slovenia.
"Russian soccer is of a higher level than Belgian soccer. It matches the level I'm used to working with. In addition, with Russia you have a chance to reach a European championship tournament if we qualify," Advocaat was quoted as saying by ANP.
"I'm 62 years old and getting a chance to go to Russia - I'm grabbing it," he said, adding that his lawyer was in negotiations with the Russian soccer association.
Russia's interest in Advocaat was "a big honour", he was quoted as saying by Russian newspaper Sport-Express.
Belgium's football association said it was would seek legal advice to determine what action to take.
