 In order to help his development, it was decided to loan him to Czech club Slovan Liberec until the end of the 2012-2013 season.Rybalka immediately became one of the key players for Slovan, and in the summer of 2013 his loan was extended for one more season.Rybalka again featured prominently in the side, helping Slovan reach the Round of 32 in the 2013-14 UEFA Europa League.