I would suggest this formation:
GK: ČALOUN
SWP: PLASS
CB: PROCHÁZKA
RB: RAJTORAL
LB: LIMBERSKÝ
CMF: HORVÁTH
CMF: KOLÁŘ
AMF: BÍNA
RWF: ŠTRUNC
LWF: SLOUP
CF: PERK
Captain: PLASS
Short free kick: HORVÁTH
Long free kick: HORVÁTH
Right corner: HORVÁTH
Left corner: HORVÁTH
Penalty: PERK
This is squad combined of players from all eras, which IMO had been most influental in history of the club and also have enough quality to be in the first 11. I'd go with HORVÁTH and KOLÁŘ as two balanced CMFs. PLASS would be SWP as he gave his best performances on that position. RAJTORAL, LIMBERSKÝ and PROCHÁZKA are logical choices in their positions. As for forward line, I put trio of legends: PERK as their best ever striker, ŠTRUNC and SLOUP who are considered as one of the greatest ever club players.
Anyway, thanks very much for this team