Rangers supporters groups have threatened a mass boycott of Lloyds Banking Group if their actions lead to a deepening of the club's financial problems.

The Rangers Supporters Assembly, Rangers Worldwide Alliance, Rangers Supporters' Trust and Rangers Supporters Association issued a joint statement in which they also urged Sir David Murray to sell his majority shareholding as quickly as possible.

Rangers' off-field difficulties have dominated the headlines in the past week after manager Walter Smith claimed on Saturday the bank was effectively overseeing their spending.

Lloyds, who recently appointed their own representative Donald Muir to the club's board, responded by strenuously denying they are running the Ibrox giants.

Despite being reportedly between £25million-£30million in the red, Rangers have insisted there will be no fire sale in the January transfer window.

But supporters have had enough of the mixed messages emanating from the club and said in a statement: "Rangers fans have endured unnecessary and damaging uncertainty over the future of the club and it is now time for this to be resolved.

"The current situation cannot continue - it is imperative that a change in ownership is completed now.

"We welcome recent statements from Lloyds that they are not running the club and are providing support in difficult times.

"However, the only meaningful way they can do that in the best interests of Rangers FC and their fans is to help a takeover be completed quickly.

"Rangers FC are Scotland's champions, a worldwide brand with fans in all corners of the globe.

"Many fans are personal and business customers of the Lloyds Banking Group (which now includes Halifax Bank of Scotland).

"Lloyds must understand that Rangers fans will quickly withdraw business if there is any risk whatsoever of the club's current situation being worsened by their actions.

"On behalf of all Rangers supporters, we urge those involved to facilitate a takeover deal quickly, end damaging speculation and engage the wider support in taking Scotland's leading football club forward."