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Bill Miller was given assurances from the Scottish Premier League and the Scottish Football Association before he took a step closer to taking control of Rangers on Thursday, according to the club's administrators.

The American businessman, who was vying for control with the Blue Knights consortium led by former Ibrox director Paul Murray and backed by Sale Sharks owner Brian Kennedy, was named preferred bidder on Thursday.

Miller's plan is to create what he described as an "incubator" company while Duff and Phelps bid to take the club out of administration through a Creditors Voluntary Arrangement (CVA).

Miller had previously sought assurances from the football authorities that his 'newco' club would not be subjected to sanctions next season.

Completing his transaction before the Clydesdale Bank Premier League ends on May 13 would ensure that his request to acquire Rangers' share in the competition is subject to the discretion of the SPL board.

SPL clubs this week adjourned a vote on financial fair play proposals, which include financial and points penalties against newco clubs, until Monday, but the rules would not take effect until May 14 anyway.

Last Saturday around 7,000 Rangers fans marched to Hampden in protest at the penalties imposed on the club by the Scottish Football Association, which include a one-year transfer ban and a £160,000 fine relating to charges of rule breaches, although the club are in the process of appealing the verdict.

Rangers are also being investigated by the SPL over alleged undisclosed payments to players since 1998.

Duff and Phelps' David Whitehouse, who refused to reveal if Miller had increased the £11.2million bid which was originally on the table, told Press Association Sport: "Bill Miller's bid has been conditional upon him reaching terms with the SPL and SFA in relation to on-going sanctions.

"Until today his bid was conditional, now it is unconditional, so I can guess you can assume from that that he has the level of comfort that he needs to proceed.

"Effectively what we have created is a scenario where Bill Miller will acquire the business and assets of the football club in a new entity, so that club and company can be taken forward free from the existing problems which were associated with the old club, while the process of administration continues to clean up the old club.

"Then, when it has agreed its payment plan with creditors, it effectively leaves the old company cleansed through a CVA and the two businesses will be reformed at a later date."

Asked if the process was liquidation by another name, which is an accusation levelled at the towing truck tycoon's bid, Whitehouse replied: "Absolutely not.

"Liquidation results in the winding up of the original company and closure of that company and ultimately striking off of that company. This prevents that."

Miller's apparent success comes at the expense of the partnership between the Blue Knights consortium and Kennedy, who aimed to take Rangers out of administration through a CVA.

Rangers' liabilities could rise to around £135million depending on the outcome of a tax tribunal held in January.

Included in that figure is around £27million owed to London finance firm Ticketus, which funded Whyte's takeover last year.

The London-based finance firm had been had been part of the Blue Knights' deal but withdrew last week.

Meanwhile, to add to the chaos surrounding the club, Whyte's lawyers Collyer Bristow are facing a £25million court action at the hands of Rangers' administrators after being accused of deliberately deceiving the club during the Motherwell-born businessman's takeover.

Whitehouse is confident that the club's creditors will allow the Miller deal to go through.

He said: "There are two issues there. Firstly, creditors have already given us sanction to complete the proposal, that's under the terms of the administration proposals which have been agreed.

"Aside from that, we have already been in consultation with the largest creditor, HMRC and they are fully aware of and are supportive of the bid.

"HMRC and Ticketus are both creditors of the company and the creditors have voted in favour of the proposals which enable us to do this deal.

"They will receive the benefit pro rata with other creditors of the pool of funds which have been created for the creditors generally.

"That pool of funds will come from the proceeds of the litigation that have been brought, the existing assets such as they are and the proceeds of the sale and purchase agreement which we are commencing now with Bill Miller."

While most fans have been pondering Whyte's position in the process, Whitehouse was unequivocal.

"He has no role in this and he can't block this deal," he said.

"This is another advantage of how the process works in that he owns the shares at the moment in the shell club.

"If we were to go down the CVA process without the newco route at the moment, we would need to either take action to secure those shares - which to date no purchaser

requires us to do - or alternatively a purchaser would have had to do a deal with Craig Whyte.

"I think everybody would accept that the preferable solution is that a deal is not done with Craig Whyte and those shares are secured in a structured manner over the coming months.

"This deal effectively ring-fences the Craig Whyte issues from the on-going trade of the business and enables us to transfer the business to a newco and deal with Craig Whyte through the litigation in due course."