Rangers were held to a 1-1 draw as Falkirk battled back to deny the visitors the chance to move second in the Scottish Championship.
Ronny Deila insists there are plenty of positives to take from Celtic's ultimately unsuccessful European campaign.
Celtic have requested the help of their fans in identifying those responsible for the latest UEFA charge for setting off fireworks.
Former Fulham boss Felix Magath has proxied his shares in Rangers to supporters ahead of the club's EGM next Friday.
Celtic have been handed a UEFA charge for incidents in their Europa League tie at Inter Milan.