Intriguingly, the hint of what might be roaring down the track came from Martin O'Neill.
The Celtic legend was stressing that the gaping managerial vacuum at Parkhead could be filled by Roy Keane.
O'Neill was present at his old club to provide analysis on the recent Old Firm clash and, as is his style, enjoyed a spot of sparring when it came to offering a forthright opinion on the state the dethroned Hoops find themselves in.
With Celtic in a state of dismal flux - no manager, an outgoing CEO, a captain leaving, 10 in a row jettisoned - everyone has an opinion.
And predictably, O'Neill chose to lobby for Corkman Keane.
Former Northern Ireland captain O'Neill however, while occasionally humorous in his delivery, is increasingly taking on the appearance of Uncle Colm in Derry Girls. Fond of a yarn but, crucially, prone to veering off script.
Yet, his achievements with Celtic - seven trophies, including three League titles - mean his opinion remains noteworthy, to some extent, to a jaded Hoops' support, desperate for a groundbreaking successor to Neil Lennon.
O'Neill has the ear of Dermot Desmond, Celtic's majority shareholder, and any rush to employ Keane would be, frankly, compelled by commercial concerns. This, despite an obvious cynicism from sections of the fanbase disinclined to be patronised by another bout of clichéd Paddywhackery. The easy solution, in other words - and a dangerously flawed one.
The installation of Keane would suggest not only a rank laziness in recruitment - and Celtic have had sufficient practice in relation to this crisis-hit campaign - but a sole concentration on merely steadying ticket sales. Unfortunately, if Keane pitches up in Glasgow's east end, that initial jolt of having a 'big' name poised to go toe-to-toe with Steven Gerrard at Rangers would soon subside with fundamental problems still festering.
Problems which require delicate unpicking - which requires an intrinsic understanding of the modern professional's mindset. You only have to listen to Keane on pundit duty to discover this is something he has real difficulty coming to terms with. His autocratic style makes for cutting analysis, but the daily art of subtle man-management?
Brendan Rodgers had it: knowing the time for tough love and when to gently encourage. Lennon, on the other hand, became an irrelevance during the dying embers of his time in charge at Celts. The constant shouting at players, unused to being savaged by the man who should have their backs, is regressive thinking. These crude methods cost Lennon at Hibernian before it all happened again at Parkhead.
With Keane, if Celtic take the plunge, it really would be a case of 'meet the new boss, same as the old boss'. That he was such a great on-field leader with Manchester United is, these days, neither here nor there.
Perhaps the United legend has become more tolerable of the limitations of those he would consider - correctly - well beneath his own class as a competitor. However, a decade away from top team management suggests few club chairmen have been willing to indulge Keane's confrontational stock-in-trade. So why Celtic? And why Desmond? I think we all know the answer - and, from Celtic's perspective, if they aim to be serious players soon, especially in Europe, it's not good enough.
Apart from initial success at Sunderland, it has pretty much been southwards for Keane in management. Ipswich was a wrong turn and there was no pulling up any trees when assisting O'Neill at Nottingham Forest. The pair lasted less than six months.
Even with the Republic of Ireland, despite reaching the last-16 of Euro 2016, eventually Keane just couldn't help himself. Bitter, personal rows with Harry Arter and Jonathan Walters, which were made public, indicated a lack of sensitivity and nuance for player-coach relationships. For any Celtic supporters tempted to believe in a Keane wrecking ball route to success, they might consider those two gilded greats, John Giles and Liam Brady, wanted him sacked from his Irish post.
Of the current Celtic squad, only skipper Scott Brown - leaving for Aberdeen anyway - would presumably understand the Irishman's abrasive manner and the deep motivations driving it. For the rest of them: a younger generation, fragile, failing to cope with responsibility - well, you can guess the rest.
Celtic also require a Director of Football, a role which has worked very well at Ibrox. How easy would it be to work with a man almost pathologically and one-dimensionally programmed to shred everyone around him in the alleged name of squad improvement? Eddie Howe or Jesse Marsch of RB Leipzig may not be tuned into the demands in Glasgow, but you can guarantee they would be safer hands.
With Rangers now serious and settled, this is one of the biggest junctures in Celtic history. In Keane, the clunky short-termism and drama with appointing a man finding himself increasingly irrelevant in management's modern age is very real.