Eduard Malofeev has left Hearts to take over Belarussian side MTZ Ripo Minsk after admitting to "problems" with head coach Valdas Ivanauskas.
Malofeev failed to win a game in temporary charge at Tynecastle
The former Soviet Union boss was in charge of six games at Tynecastle in Ivanauskas' absence, but failed to record a single victory.
"I had problems with Ivanauskas," Malofeev told the Daily Record.
"He is a wonderful boy but it was difficult at times to find a mutual understanding with him."
Ivanauskas took sick leave recently from the Edinburgh club and Malofeev was installed in his place by majority shareholder Vladimir Romanov.
I must admit we did not play well during my month in charge
But, after Ivanauskas returned to the dug-out for the draw at St Mirren on Saturday, Malofeev outlined difficulties between the two men during their time together.
"When I first arrived at Hearts, I did not have a Uefa licence so could not secure a work permit," he said.
"It was then I had to take on the function of director of football and work as a consultant to Romanov.
"I took part in the organisation of some of the training programmes, but I had problems with Ivanauskas and this is why I could not take on a greater role in the running of the team.
"I told Romanov of my problems with Ivanauskas, but, when he became ill, Vladimir asked me to be head coach."
The 63-year-old confessed to problems in overcoming cultural differences between his background in eastern Europe and Scotland.
"I liked some moments in Scotland but not others, and when I found something I didn't like I told the bosses.
"We are stronger in the training programmes in Russia and Belarus but the people of Scotland love their football," he added.
"I must admit we did not play well during my month in charge as we drew three games and lost to Rangers and Celtic."
In taking over at MTZ Ripo - one of the clubs financially supported by Romanov - he has no plans to retire from football.
"I will set high standards with Ripo. If you are afraid to fail then you should not even be part of this sport."