Rangers have put plans for an extraordinary general meeting of their shareholders on hold.
The club last month announced plans for an EGM following reports that major shareholders were preparing to oust then-chairman Malcolm Murray and fellow director Philip Cartmell and replace them with James Easdale and Chris Morgan.
But Murray has since resigned and handed his boardroom role to former manager Walter Smith.
A club statement issued on Thursday to the London Stock Exchange read: "On May 16, 2013, the company announced that it had received a notice requisitioning a general meeting of shareholders.
"The company is engaged in discussions with a representative of the requisitioning shareholder and the timetable for posting a notice to shareholders has been extended with the agreement of the requisitioning shareholder.
"Further announcements will be made as appropriate."
Easdale recently confirmed that he and brother Sandy, also his business partner, hoped to secure a boardroom slot as they continue to increase their shareholding.
The Greenock-based businessmen said they had a delicate deal to purchase more shares - believed to belong to former chief executive Charles Green - when they became available.
But Green has now agreed to transfer half a million shares to Isle of Man-based investment firm Laxey Partners Limited once stock market rules allow the switch on 7 December.
Green, who was listed as owning more than 5million shares in the latest documentation available on the Rangers website, resigned his position in April following "negative publicity" over his consortium's acquisition of the club last summer.
But the Yorkshireman last week claimed he had been vindicated by the outcome of an independent inquiry which found no evidence ex-owner Craig Whyte invested in the current Ibrox set-up.
The probe was commissioned by the Rangers board after Whyte alleged he was involved in the Green-led consortium's purchase of the club's business and assets following liquidation.
Morgan was named as one of the original investors when a consortium fronted by Green purchased the assets and business of liquidation-bound Rangers in June last year.
Green described him at the time as a "UK-based businessman representing family trusts".
Nicholson joined the Grecians from Derby in October but he will now become head coach for the newly-promoted Bluebirds' Under-17 to Under-21 age groups as well as managing their Under-18s.
And while he admitted he is relishing the chance of working in the top flight, Nicholson admitted it will be difficult to leave the League Two side.
"I'm delighted to have been given the opportunity to join a club the size of Cardiff City and to take on a very important role within their Academy," he told the club's official website.
"I've thoroughly enjoyed my time at Exeter City - it's a wonderful club, full of excellent people. It's been a valuable experience for me and one in which I've learnt a lot.
"I'm also sad to be leaving, because I've built up very good relationships with everyone at the club, including Steve Perryman and Paul Tisdale.
"Exeter took a chance on me back in October, when there was no other club prepared to do so at that time."
The 23-year-old, who spent a loan spell with the Exiles during the 2011/12 campaign, made 110 appearances for the U's after joining from Sheffield United in 2009.
"Adam was with promoted champions Mansfield this season and he's a great asset to the team as he gets forward and scores goals which will fit into the style of football we want to play here next season," Exiles boss Justin Edinburgh told the club's official website.
Newport also announced the signing of former Oxford winger Chris Zebroski who had been without a club since leaving Cheltenham in the winter.
The 22-year-old, who has signed a two-year deal, joined the Silkmen in January 2011 and played 85 times for the Blue Square Bet Premier side, scoring six goals and ended last season on loan at Lincoln.
"I am really glad to be playing in the Football League again and I was really impressed with what the manager (Jim Bentley) said to me," he told the club's official website.
"I am looking forward to moving to the area and can't wait for pre-season to start."
Bentley added: "For a young lad, he has played a lot of first-team football and can play in several positions, which is something we are looking for.
"I know there were a few clubs that were looking at him, so I am really pleased that he has chosen Morecambe and I am sure he will do well for us."
