Ardija's President, Shigeru Suzuki gave a press conference on Tuesday this week.
Here is a link to an article from the Japan Times that was in the August 14th 2013 print issue and online from August 13th 2013. It's a piece from the Kyodo news agency and quotes the Ardija chairman, Shigeru Suzuki.
The article suggests that Tsutomu Oguro will be the replacement for Verdenik. From reading this article it seems that Oguro will not be officially in place before the Sagan Tosu away game on August 17th 2013.
The chairman gives his opinion that the decision had to be made, because Verdenik had clashed with the coaching staff and lost the dressing room.
see below for the link.