Work on the new showpiece stadium at Stanley Park has been held up while designers examine ways of increasing the agreed capacity of 60,000.
Businessmen Tom Hicks and George Gillett ordered architects and the planning team to urgently review the project with creating space for more fans as a key element.
A senior source close to the project last confirmed to the Daily Post that a bigger-capacity ground was on the cards.
"There is an urgent review of the project which is going to take several weeks, and is likely to mean a bigger capacity for the ground," said the source.
City council planners insisted last night that a new planning application would have to be submitted if there were major changes to the plans.
Liverpool FC officials at Anfield were remaining tight-lipped about the prospects of a bigger stadium.
An LFC spokesman said: "There is a total commitment to a new stadium, but the new owners are conducting a thorough review of the current proposals, to see if there is any way they can be improved."
The potential increase in seat numbers will now be one of the key decisions to be taken, but it is initially likely to be closer to 65,000, rather than suggestions of an 80,000 capacity.
Preparatory work on the new ground in Stanley Park began just days ago, but last night was on temporary hold while the review is carried out.
City council leader Cllr Warren Bradley, in the south of France for an international property exposition, told the Daily Post: "The city will facilitate and enable but what I would say is if Liverpool FC feel they want somewhere bigger they've got to understand the planning process.
"The last thing we need is the regeneration of the Anfield/Breckfield area to be stalled if Liverpool FC brings forward a new plan.
"It could put it in jeopardy now that the plans have gone through the planning process and appeals, and I think it is important that the people of Anfield/Breckfield see the plans moving forward that will bring a new park and a district centre.
"Liverpool haven't spoken to us yet."
Planning experts last night described how the club could extend its capacity without delaying the construction of the £200m stadium, due to open in 2009.
The club could reconfigure the internal layout to create more seating space, and modify its plans to accommodate a future expansion of the seating capacity.
That could be done in a way that would enable an extension to be bolted on without closing the ground. The club would need planning permission.
Last night, Cllr Berni Turner, who has been made a director of the new council-LFC joint venture company to own the site said: "I have spoken with senior officials and this is all pure speculation."
A city council spokesman said: "Liverpool LFC is proceeding with its scheme for a 60,000-seat stadium at Stanley Park. No application has been received by us about extra capacity."