Mišůn played for FK Příbram, where he made 24 appearances and scored two goals.
[citation needed] Mišůn's signed for Scottish Premier League side Celtic in December 2008 after they fought off competition from AC Milan[2] and Copenhagen[3] Mišůn was given the number 15 shirt and was eligible to play for Celtic from 1 January 2009.
[4] Mišůn was loaned out for a month to Scottish First Division side Dundee on 17 September 2010[5] and made his debut the following weekend in a 0–0 draw against Raith Rovers.
[8] After returning to Celtic, on 28 January 2011 Mišůn apparently joined League One side Swindon Town for an undisclosed fee[9] - however, it was later revealed he had not officially signed a contract.
[10] After joining Viktoria Plzeň, Mišůn was linked with a move to Sheffield United in July 2012.