After being a free agent for some time Karalahti was approached by HC Slovan Bratislava, a top Slovakian side which is the current Slovakian League champion. Karalahti's move to Bratislava came to jeopardy when the transfer fell through because of a missing signature in the transfer documents. Juuso Pulliainen, Karalahti's agent, assured that both the Slovakian Ice Hockey Administration and Finnish Ice Hockey Administration had agreed that Karalahti's rights are owned by Slovan, hence meaning he could play for Slovan. However, Karalahti stated that he wanted to clear things in Finland before rushing into anything.