Council chief executive Colin Hilton said: “I would re-emphasise the need to meet with the club’s new owners again and talk through the stadium issues.
“Irrespective of any new capacity, the development is something we wanted to discuss in terms of transport infrastructure and easing congestion.
“We want to explore the possibility of the development of the Bootle rail branch line with Merseytravel and encourage the new owners to take a wider view of regeneration in the area.”
Liverpool’s current planning application was approved in July 2004 and the government opted not to call it in. The club hopes the existing permission will cover any increase in size.
But Cllr Flo Clucas, executive member for economic development, said: “If there was a completely new planning application and they were looking to increase the size, the Secretary of State could call it in.
“That would be a matter for the Secretary of State and the club to deal with.