Dinamo Zagreb's preparations for their Europa League clash with Tottenham have been thrown into disarray as coach Zoran Mamic has resigned after being sentenced to four years and eight months in prison, Goal reported.
Mamic and his brother Zdravko were found guilty of corruption charges in 2018.
Croatia's supreme court upheld the initial rulings on Monday, and Mamic tendered his resignation.
"Although I don't feel guilty, I resign as I said before I would do if the sentence was confirmed," Mamic said in a statement on the club's official website.
"I wish all the good luck to the club."
The club's board accepted the resignation of their coach and acted swiftly to appoint Damir Krznar as his successor.
Krznar has a monumental task on his hands, as Dinamo face Spurs in the second leg of their Europa League last-16 tie on Thursday, trailing 2-0 from the first leg in London last week.