Former Celtic defender Tom Boyd believes that the psychological impact of the Parkhead side’s win at Ibrox on Sunday afternoon will linger in the minds of Rangers ahead of next month’s William Hill Scottish Cup semi-final.

Boyd, Celtic captain when the club won the Treble under Martin O’Neill in 2001, was a mainstay of the Hoops side who suffered repeatedly at the hands of Rangers throughout the 1990s.

Brendan Rodgers has yet to taste defeat to the Ibrox side having won 7 games against Rangers and drawn two and the effect of that is not to be underestimated, according to Boyd who lived through the opposite experience.

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“It demoralises you and that most recent one [defeat] will certainly lower their spirits because they’d been getting results and scoring goals for fun but the thing for me at Ibrox was that neither defence played to their capability.

“There were a lot of opportunities created and Rangers, in particular, were exposed and the quality of Celtic’s finishes highlighted that.

“There have been a few good victories at Ibrox for Celtic recently – the 5-1 was special, obviously – but grinding it out like that with 10 men is one that will be remembered for a long time.

“For them to have done what they did last month requires discipline and organisation as well as talent and that’s what Celtic had.

“Harking back to the 1990s, Rangers were on top and had all these international and world-class players.

“Celtic have that now and it’s the extra quality they have – as well as a top, top manager – which makes the difference. Rangers also have a very inexperienced man in charge, compared to Brendan.”

There has been a received narrative that Rangers talked up their chances in the build-up to Sunday’s game which is a little misplaced. The most noise ahead of the meeting came from former players rather than current ones although it would be difficult to view the decision to make public the cheering that greeted the news of the Cup draw as anything other than a case of foot in mouth.

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Whether it played into the hands of Celtic or not is irrelevant but the hype in the lead up to the game centred around that confidence and optimism, something that Boyd highlighted as evidence of the naïvity within the Ibrox ranks.

In addition to the demoralising aspect of the result was the manner in which it was achieved. And it is the manner in which Rangers allowed the game to ebb away from them that Boyd believes will have the biggest impact.

“It was as damaging a defeat as any at Ibrox for them and there are a few reasons for that,” observed Boyd. “There was the cockiness from them beforehand and the cheering which came from their dressing room after they’d been drawn against the champions in the semi-finals of the Scottish Cup.

“They’d been given some adulation after being in some wonderful games and scoring a lot of goals against some lesser opposition so they’d gone into the game with some confidence.

“Add to that they were playing in their own territory, they’d been in front twice and Celtic had then gone down to 10 men and still beaten them, which shows the commitment and the desire of Brendan’s players.

“It will be a big blow for them.

“I think that [cheering at the draw] is probably part of Graeme Murty’s learning curve as a manager. You don’t ever give the opposition a motivational speech and that’s what he did.

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“Not that Celtic needed it. Right from the start they looked composed on the ball. But there was a level of cockiness and optimism about them and it’s proved to be unfounded.

“It was an excellent performance by Celtic. The team did their talking on the park with the quality they showed, especially the admirable way they coped with being reduced to 10 men.

“Brendan made the latest in a series of the great tactical switches we’ve become used to during his time here and, once again, the player coming on had an impact on the outcome.”

Celtic’s bench at Ibrox underlined the resources available to the Parkhead side. And with the likes of Patrick Roberts and Stuart Armstrong

“Odsonne Edouard is a great luxury to have on the bench and Celtic’s bench is only going to get stronger during the run-in because Stuart Armstrong, Patrick Roberts and Leigh Griffiths are all coming back.”

“It was a fantastic display; the boys did really well to dig deep and see it through.”

Tom Boyd was speaking at a press conference to announce the stage show ‘Smell the Glove’ a celebration of Wim Jansen’s Celtic’s team who stopped Rangers winning ten-in-a-row in 1997/98. Dates have been confirmed for the Alhambra theatre in Dunfermline and Greenock Town Hall.