Dom McKay was "massively invested" in Celtic's project before his shock exit earlier this month, according to journalist Stuart Hodge.
What's the latest news involving McKay?
With Peter Lawwell due to retire in the summer, McKay was confirmed as Celtic's new chief executive at the start of the year.
However, it was announced in April that McKay would begin working at the club alongside the outgoing Lawwell close to three weeks ahead of schedule.
McKay went on to play a key role in Ange Postecoglou being selected as the Hoops' new manager in June and, less than a month later, he took sole responsibility for the chief executive role following Lawwell's departure.
However, McKay's tenure was shortlived as he resigned just 72 days after walking through the Parkhead doors due to personal reasons.
It has been reported that tension behind the scenes was a significant reason for McKay choosing to step aside.
What has Hodge said about the situation?
Hodge insists McKay was fully committed to the chief executive role at Celtic before handing in his notice.
However, he believes McKay was left with no choice but to walk away due to there being no signs of changes being made to how the Scottish giants' hierarchy works.
He told GMS: "Dom McKay had three months or so and went, 'if you're not going to let me do this right, I'm out'.
"That's why he's left and Celtic have lost a really talented guy who was massively invested in this project.
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"They've lost him because of the same reasons that have been holding Celtic Football Club back for a number of years and that is that protectionist mindset where power will not be ceded by the people with the money.
"I get that it's their money but having that amount of say in a football club is not going to be the best thing for the football club.
"Trust in a sporting model and Celtic can move forward."
What's going on behind the scenes?
According to the Scottish Daily Mail, via 67 Hail Hail, McKay may not be the only leading figure departing Parkhead as chairman Ian Bankier is also expected to leave.
Bankier was named as the Hoops' chairman a decade ago.
Meanwhile, Celtic’s director of legal and football affairs Michael Nicholson, who has been on the club's books since 2013, has been appointed as the acting chief executive officer following McKay's resignation.