Both players were unused substitutes during Tuesday’s 3-1 win away to Sarajevo with Neil Lennon expecting both to have a big role in Celtic’s hopes of reaching the group phase of the Champions League.
Griffiths hasn’t played at Celtic Park since the start of December and is assured of a special welcome while Jullien will play his first match in the hoops following his £7m move from Toulouse.
“The friendly on Saturday is important, to get the likes of Leigh Griffiths and the boys who didn’t play, and Christopher Jullien will hopefully get some game-time too,” Lennon told the Celtic website. “It’s just a question of slowly but surely getting them all up to match fitness so that, hopefully, we can continue to progress.”
Lennon will be hoping to get through tomorrow’s match without any further injuries after Mikey Johnston and Boli Bolingoli picked up knocks during the win over Sarajevo.
Jack Hendry and Maryan Shved missed the match after picking up injuries in training while Kieran Tierney and Tom Rogic are still recovering from injuries picked up last season.
If Celtic complete the job against Sarajevo they will play their second round qualifier first leg at home on July 24 with the away leg on July 30.