Career
He represented his country at youth level Mikula headed on loan to Students Fighting Cancer Opava in 2012 in order to play first-team football. At the end of the season, he headed to MFK Karviná on a permanent transfer.
He was captain of Karviná in the 2013-2014 season, as the club finished in 8th position.
He left Karviná in summer 2014 following the expiry of his contract, returning to Opava on a two-year deal.