Or was it such a shock that the matter concluded in the way it did?
From the outset, that had looked like the case. Rangers had made their interest known, the player - a fan of Rangers apparently - was keen to the point of handing in a transfer request and bids had come flying into Easter Road from Ibrox.
Yet Allan has ended up at Parkhead and some people are bewildered by this.
What is bewildering was not the fact that Celtic stepped in at the last minute to pinch a transfer target that had been on Rangers' radar, but as to how easy the latter made it for the former.
Some have compared this to the Mo Johnston affair from 1989 but those people have been eyeing it via the rivalry (if not religious) angle.
Cast your mind back to then. Word broke that Celtic were bringing Johnston back to the club from French side Nantes.
The club didn't seem particularly keen to downplay the speculation and even went as far as parading him out on the pitch in front of a packed stadium before a pre-season friendly with Johnston and Celtic manager Billy McNeil giving TV interviews on the move.
Then out of nowhere, a few days later, Johnston is unveiled as Rangers' new signing with the contract signed and the fee on its way to France.
Rangers had done their business quietly.
While there was no parading of Allan at Ibrox, they did not show the same mute approach as they might have done because Celtic most certainly did.
Rangers, if you recall, made their interest in the player very public. Naturally this did not go down too well with Hibs whose backs were well and truly put up.
The Edinburgh side hit back with a blunt statement which expressed annoyance at this 'tapping up by media' and were angered to the point of saying they would not be selling to Rangers. Didn't state anyone else - just Rangers.
While loud bluster might have forced an old board of directors out of Ibrox in last March's egm, those in charge at Hibs would not be pushed around so easily.
A low bid was made. it was rejected.
A second bid was made, it was rejected.
Pressure via the media from pundits and ex-Rangers players alike came flooding in towards Hibs in droves.
If making the initial interest public upset Hibs, you can imagine how they felt at being told to "bow down to the inevitable and sell Allan to Rangers" on a daily basis.
Naturally the felt a huge wave of disrespect coming at them from all angles and not surprisingly, they dug in their heels.
Given that club had stood up to being taken over and merged with their Edinburgh rivals back in 1990, a simple transfer bid would not make them bat an eyelid.
Now consider how most transfer in Scotland have been concluded this summer.
A lot of them have sprung up when negotiations have moved to such an advanced stage that the player is already on his way for a medical.
Hearts sprang a lot of their transfer announcements in the close-season out of the blue.
The infamous 'klaxon' tweet that has become synonymous with the club's twitter feed often took fans by surprise with the announcement of each signing.
With the exception of Juwon Oshinawa - whose arrival was delayed by visa issues - most supporters only knew about the rest when they had been pictured with the scarf above their heads.
Other clubs have been conducting their business behind the scenes and by and large have successfully concluded the transfer deals that they were involved in.
Rangers, however, were very public with their interest in Allan - and aggressively so.
And what it did do was stupidly show their hand to anyone else paying attention who also felt Allan might be a useful addition to their squad - Celtic.
The three public bids made it clear how much Rangers were prepared to pay. Someone at Celtic would no doubt have been keeping tabs on these figures.
As would the fact that Rangers didn't seem to keen to up their offer after the last one had been knocked back.
Given that Dave King spoke of spending 'whatever it takes' to get Rangers in the top-flight (no doubt from the 'north of £20million' he had previously said he was going to inject), surely they could have put in a huge offer that not even an irked Hibs could refuse?
They didn't (key to the warchest probably fell down a drain) and someone at Celtic would have taken note that it would take much to gazump the other Glasgow team.
They will have no doubt also been noting how antagonised Hibs were becoming by the very vocal and public pressure being put on them.
The people at Celtic had probably, and correctly, assumed that a more soothing approach would be better received by the Edinburgh club.
And so they made their move and had a quiet chat with Hibs.
There was probably some jostling for position during the negotiations but the fact that they came to an arrangement to pay a fee for Allan - plus two players heading to Easter Road from Parkhead as part of the deal - shows Hibs were more receptive to a cordial approach instead of the bombastic bluster shouted from the rooftops from Ibrox.
A window - albeit a small one - was still open for Rangers to show the wealth of this infamous 'warchest' - only it appears that the lack of any counter-bid shows the contents of it may likely be moths instead of money.
Celtic could probably have still signed Allan had Rangers done their negotiations in a more quiet and respectful manner.
However, by taking the opposite tack, Rangers not only annoyed Hibs with their lack of courtesy but also managed to isolate themselves from the selling club.
Some may point to Hibs' refusal to sell to a second tier rival but that's never stopped clubs - including Hibs - selling players to one of the Glasgow clubs in the past.
They may have been amiable had there been a more civil approach from Rangers.
Instead, all Rangers did was perform a public dummy run for Celtic which tested the water as far as the Parkhead club were concerned in terms of working out how much it would take to get Hibs to sell.
And with Rangers casting themselves as unwitting bait, Celtic duly reeled in the player.