Prolific forward Commons missed Celtic’s 2-1 Scottish Premiership victory of St Mirren on Saturday, nursing a buttock problem, while on-loan Belgium Under-21 Denayer (ankle) was also absent.
Fellow Manchester City loanee and two-goal hero in Paisley, John Guidetti, is again ineligible in Europe while defenders Mikael Lustig (groin), Adam Matthews (calf) and Charlie Mulgrew (knee) definitely miss out.
Serbian striker Stefan Scepovic will be assessed on matchday after being kicked during training but Scotland winger James Forrest (hamstring) is out until after the international break.
Dinamo Zagreb beat Astra Giurgiu 5-1 in their opening Group D game. Coached by Zoran Mamic, they have on-loan Manchester United striker Angelo Henriquez in their ranks and also Algeria forward El Arabi Soudani, who scored a hat-trick against Astra.