James Bisgrove has revealed both Ibrox and Parkhead require stadium modifications to host matches between Rangers and Celtic.

The Ibrox chief executive has explained changes will be made to the turnstiles at Ibrox before the five percent away allocation comes into force next season.

Celtic and Rangers agreed a deal to adopt a European-style allocation for derby fixtures. There will be no away fans for the remaining matches this term.

And Bisgrove has now suggested a contributing factor to the absence of away fans for derby matches in recent season has been the need for tweaks at both grounds.

Speaking at a Rangers CEO Fan Forum, Bisgrove said: "One of the reasons zero has been the number at the last two Old Firm games is that both clubs need modifications to their stadiums.

"We will make adjustments to turnstiles, Parkhead will make modifications to ingress and egress to improve the supporter experience.

"Time has been taken to get it right for next season.

"Feedback suggests our away support experience is sub optimal and we hope to get improvement on that with the 5% allocation we will receive at Parkhead."

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Some supporters will be moved at Ibrox due to the five percent allocation but Bisgrove has insisted the change is an overall positive - as he vowed a greater allocation like the previous Broomloan Stand would never be allowed.

He added: "It is positive in terms of atmosphere and for the spectacle of the fixture, it's a positive step forward.

"However I would like to put on record again that this Board would never go beyond 5%, ie the full Broomloan Stand.

"The European allocation is the right number.

"If we had not engaged in this process, there was a risk another number could have been imposed which would be less favourable."