Celtic face an almost impossible battle to sign Fraser Forster permanently this summer due to his extraordinary Southampton contract.

Football Insider can reveal for the first time details of the five-year deal the giant keeper penned in the summer of 2017.

A Saints source has explained the agreement is worth £5million a year, equivalent to just shy of £100,000-a-week.

That is worth three times more than the salary earned by Celtic’s top earners Scott Brown, Christopher Jullien and Callum McGregor and is a jawdropping sum for a Premier league third choice keeper.

Given Forster, 32, has two years remaining on his Southampton deal, there is little hope of the Scottish 10-in-a-row chasers signing him full-time.

The economics of the deal, in light of the pandemic, make it virtually impossible as Forster would also command a transfer fee of around £10m.

However, a second consecutive season-long loan is firmly on the cards.

Celtic would need to pay a contribution towards the keeper’s Southampton wages rather than all of them, as well as a multi-million pound loan fee.

Significantly, Ralph Hasenhuttl signed a new four-year contract earlier this month and he has no plans to bring Forster back in from the cold.

The shot-stopper had plummeted to third in the goalkeeper pecking order at St Mary’s Stadium before he rejoined the Hoops on loan last August.

The number one a position has been held by Alex McCarthy, 30, either side of the lockdown.

The Premier League club also have high hopes for Angus Gunn, 23, who was first choice earlier in the season before losing his place.

In other Celtic news, the club have been tipped by insider to sign McGregor’s pal if Elyounoussi deal collapses.

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