Ajeti arrived from West Ham after the season had started, after a season spent on the bench with the London side his initial appearances were brief but showed an obvious knack for finding the net.
The Swiss striker was cited by the SFA for simulation but after winning their appeal to allow Ajeti to play he spend 90 minutes on the bench against St Johnstone.
Speaking before the match to BBC Scotland, Lennon said:
Albian Ajeti is feeling a bit fatigued, so we go for a bit of rotation and Ryan Christie looked fresh and energetic when he came on the other night. We respect St Johnstone. I’ve always admired their mentality but I hope we take the game to them as best we can.
Edouard scored twice today to give Celtic full points making it goals in each of his last six appearances, taking his club total for the season to 20 goals.