|Date of birth||2 December 1975|
|Place of birth||Czechoslovakia|
|SK Slavia Prague|
|2012||SK Slavia Prague|
Poustka was announced as the caretaker manager of Gambrinus liga side Slavia Prague in March 2012, following the resignation of František Straka, who he had previously served under as assistant manager. At the age of 36, he became the fourth-youngest Slavia boss in history. Poustka was appointed until a permanent appointment could be made. However, after Vítězslav Lavička refused an offer to take over, Poustka's spell continued.
- "Martine, držíme palce! Straka zapomenut, slávisté vítali nového kouče". idnes.cz (in Czech). 11 March 2012. Retrieved 23 March 2012.
- "Trenéra Straku proti Jablonci nahradí dosavadní asistent Poustka" (in Czech). idnes.cz. 9 March 2012. Retrieved 9 March 2012.
- "Trenér Poustka přebírá Slavii nastálo, Lavička nabídku odmítl". idnes.cz (in Czech). 14 March 2012. Retrieved 23 March 2012.
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