MANCHESTER CITY are set to pocket up to £13.5million by selling England Under-21 keeper Angus Gunn to Southampton.

Saints boss Mark Hughes will raid his old club to land the highly-rated 22-year-old - and the move could be finalised today.

5 Southampton are set to announce the signing of Angus Gunn from Manchester City Credit: PA:Empics Sport

5 City have accepted a deal that could rise to £13.5m from the Saints Credit: Getty Images - Getty

He will cost an initial £10 million - with an extra £3.5million of add-ons if he proves to be a success.

That puts him in the top ten most-expensive goalkeepers in Premier League history - even though he has not played a game for City.

Gunn, 22, is the son of legendary former Norwich City stopper Bryan and he followed in his father's footsteps by impressing for the Canaries during a season-long loan stint last season.

Gunn played all 46 Championship matches for the club and now wants to get first-team action.

5 Gunn shone on loan with Norwich last season Credit: Getty Images - Getty

5 Angus Gunn is the son of legendary former Norwich goalkeeper Bryan Credit: Dave Pinegar - The Sun

5 Gunn has won 11 caps for England at Under-21 level Credit: Getty Images - Getty

He has been tipped as a future England international but has found his opportunities restricted at the Etihad due to the outstanding success of Ederson.

Southampton have been linked with him for months and his arrival is likely to lead to the exit of either Fraser Forster or Alex McCarthy.

The duo shared goalkeeping duties last season, with the latter finishing the campaign as first-choice.

Forster's last start was the 5-2 Premier League defeat to Tottenham on Boxing Day.

Gunn is still well-regarded by City, who will include a buy-back option and a hefty sell on clause in the deal.

However, boss Pep Guardiola is happy with Ederson and Claudio Bravo as his two main keepers - while youngster Daniel Grimshaw will be promoted to third choice.

Former England goalkeeper Joe Hart is back training at the Etihad but is up for sale this summer.