The club announced Lennon was leaving the club with immediate effect after a turbulent campaign which saw the Hoops’ hopes of a 10th league title in a row disintegrate.
With Rangers 18 points ahead in the title race and set to be crowned champions in the next few games – possibly at Celtic Park in the Old Firm derby next month – attention has now turned to who will replace Lennon permanently in the Celtic hotseat.
But fans also have questions about the timing of the change as debate raged on social media over the state of play at the club.
Here’s a selection of comments from fans on Twitter.
@ForCelts: Neil Lennon is away, as normal with Celtic it leaves more questions than answers, why now and not 3 months ago, was the board playing games behind everyone’s back
@j_mag88: After the dust settles I’m sure most fans will remember good times that Lennon had. But you have to question him walking now! Why has it taken to now for him to walk when Rangers are basically already champions? Frustrated doesn’t begin to describe how I’m feeling.
@BillyTh88439093: Announce Eddie Howe
@Dsawden82: Yes Lennon should have left ages ago and the season has been a joke but some of these players need to take a long hard look at themselves, not just Lennon to blame.
@biggbo100: Eddie Howe would be obvious appointment for me. Free agent, had a good rest will be fresh and ready to go, worked on lower budgets, track record of developing younger players and good with the media. Ticks a lot of boxes
@AJThoms214: Wish Lennon all the best in his future endeavours. The feels of anger and frustration are down to the board, they should have taken action in November.
@LewisLaird01: A decision that should have come long before now but it’s happened now. Board got a big few months ahead to get the right man in for next season now