Dinamo Zagreb chief Zdravko Mamic resigned on Tuesday a day after Croatian national anti-graft prosecutors opened another multi-million-euro probe against him. (Read More in Football)
Mamic, considered the most powerful man in Croatian football, told reporters he was stepping down as executive director to allow the club to move forward.
But the controversial 56-year-old said he would remain as an advisor to the Croatian champions and argued the probes against him were politically motivated "to destroy Dinamo and the Mamic family".
"I'm jailed every now and then without any concrete evidence," Mamic, who has already been detained twice, told a press conference.
On Monday, the national anti-graft USKOK bureau said it was probing Mamic and six other people including his brother Zoran, who is Dinamo coach, son Mario and former director Damir Vrbanovic.
They are alleged to have embezzled nearly 70 million kunas (nine million euros, $10.3 million) of Dinamo Zagreb's money through fictitious deals related to player transfers.
The are are also being probed for allegedly giving and receiving bribes, tax evasion and other offences to the tune of 17 million euros.
Mamic was Dinamo Zagreb executive president since 2011 and has held top positions in the club since the early 1990s.