Glasgow's city council is set to provide a major financial boost to the £66m revamp of one of Scotland's cultural jewels.

Next week the Executive Committee of Glasgow City Council has been advised to rubber stamp funding worth up to

£27.3m for the refurbishment of the Burrell Collection in the city's south side.

With £5.7m already committed by the council, the total money from the city for the landmark project totals £33m.

Councillors will also be asked to green light a bid for £14m in funding from the Heritage Lottery Fund (HLF).

The application will be submitted in June and the success of the HLF bid will be known by September.

The city is also looking to raise a "minimum of £15m" from corporate sponsorship, trusts and foundations and individual donors, papers which will be considered by the Executive Committee state.

The building in Pollok Park, which holds the treasures gifted to the city by shipping magnate Sir William Burrell, is currently closed for the redevelopment, and, according to the papers, is now due to open in the latter months of 2020.

The new figure for substantially upgrading the existing museum compares to the £74m cost of the Riverside Museum, a completely new building, and the £28m cost of revamping the Kelvingrove Art Gallery and Museum.

Councillor Archie Graham , Depute Leader of Glasgow City Council and chair of Glasgow Life, which runs the city's museums and galleries, said: "Sir William's great legacy has been described as the greatest gift a city has ever received and we have a moral duty to ensure it is housed in the finest of buildings.

"The Council and our partners are fully committed to unlocking the great potential of what is a world-class collection.

"The Burrell Collection is a masterpiece and the refurbished and redisplayed museum will be one of Scotland's finest cultural assets."

The papers state that the city is in discussion with "international and national institutions regarding touring exhibitions of specific items from the Burrell Collection, the main aim of which is to raise the profile of the city internationally and to attract potential donors."

The touring exhibition programme is scheduled to run from 2017 to early 2020.

The paper re-iterates the need for an overhaul of the building.

It says: "The deteriorating fabric of the building is endangering the security of the collection.

"The issues with the roofing system over a period of years have created significant leaks.

"The power, heating and lighting systems have been well maintained, but in contrast to modern systems are difficult and costly to run...although remedial repairs have been carried out, a major overhaul is required to secure the integrity and sustainability of the building and to protect the collection."

It adds that visitor numbers have fallen "dramatically".

It says: "This is due in part to the deteriorating condition of the building but also, as is evidenced in audience research, by a deficiency in the visitor offer and as a result of poor access to the collection, both physical and intellectual.

"The proposed refurbishment and redisplay will address the issues associated with both the visitor proposition and the failings of the building fabric and systems.

"It will provide a suitable, sustainable home for Sir William Burrell’s collection within Pollok Country Park."

The papers, an update to the Executive Committee on progress made to date on the refurbishment plan, says that the planned revamp will make 90% of the collection accessible to the public, compared to 20% which was displayed prior to refurbishment.

This will be achieved by creating 22% more public space, with new access to the basement stores, a new exhibition gallery and events space and by converting existing first floor offices to gallery space.

A new central space will allow visitors to "see all three floors to encourage use of the entire building and for ease of navigation."