However, there have been changes made to the conditions attached to their bids, including a request for access to the football authorities in order to seek "greater clarity" on the SPL resolutions.

Former Ibrox director Paul Murray's Blue Knights, a Singapore consortium fronted by Bill Ng and American tycoon Bill Miller are all vying for control of the stricken Glasgow giants.

The proposals, which will be considered by the 12 top-flight clubs on April 30, will mean tougher sanctions for clubs who go into administration in future or face the prospect of liquidation.

If Rangers are liquidated, a 'newco' would be deducted 10 points for two seasons if accepted straight back into the SPL and would also face financial penalties in the form of league payments being slashed by 75% for three seasons.

Sale process

Paul Clark, joint administrator, said: "Following discussions with three parties bidding to purchase the football club, we can confirm that all three parties have informed us today they wish to remain in the sale process.

"However, following the information supplied by us to bidders in relation to proposed new rules on penalties for insolvent clubs within the SPL, there have been changes made to the conditions attached to bids.

"Among the new conditions are requests from parties who now, before committing further, wish access to the football authorities in order to seek greater clarity on the proposed rule changes.

"We hope to provide Rangers supporters with a further update next week and will continue to make every effort to reach the point where a preferred bidder can be announced.

"We are keen to conclude an offer as soon as possible and certainly we would hope that this does not mean that finalisation is delayed until April 30, 2012."