Fraser Forster will move to Southampton if Celtic crash out of the Champions League
The Celtic goalkeeper will be allowed to move south of the border provided his club fail to overturn their Champions League deficit tonight
Fraser Forster will leave Celtic for Southampton this summer - provided the Hoops do not overturn a 4-1 deficit against Legia Warsaw in tonight's Champions League third qualifying round encounter at Murrayfield.
Southampton have agreed a fee with Celtic for the England international believed to be £8 million - almost double the Saints' initial bid of £4.5 million which was described as "derisory" by Celtic.
The Glasgow club face a monumental uphill task in holding onto Forster, however, requiring a 3-0 victory in Edinburgh this evening in order to progress and stand a chance of retaining their stopper, who travelled as part of the England squad to Brazil for the World Cup.
Koeman is also said to be keen on signing Forster's Celtic teammate Virgil van Dijk as he attempts to rebuild his squad following the loss of several key players.
However, his desire to sign Forster may signal the end of the Southampton road for Artur Boruc, who has been linked with a move to Bayern Munich.
The departures of Rickie Lambert, Luke Shaw, Adam Lallana, Dejan Lovren and Calum Chambers have been exacerbated in recent weeks by the unrest provoked by Tottenham Hotspur's pursuit of Morgan Schneiderlin and Jay Rodriguez.
Forster was selected for England's World Cup squad but did not play a game
Koeman's desire to sign Forster may signal the end of the Southampton road for another former Celtic keeper in Artur Boruc, who has been linked with a move to Bayern Munich.
Board creates magnetic field to achieve lift
Follow the latest events from this Champions League fixture
Like Madonna, Sister Cristina Scuccia's video is also set in Venice
Singer says the track was 'force-fed down people's throats'
techThe original free dating app will remain the same, developers say
Latest in Sport
Luis Suarez: Lionel Messi is better than Cristiano Ronaldo
Indian footballer Peter Biaksangzuala dies from spine injury after doing somersault celebration
Arsenal vs Hull: Gary Lineker and Piers Morgan lead criticism of Arsene Wenger after 'uncomfortable' interview with Jacqui Oatley
Adel Taraabt criticism from QPR boss Harry Redknapp sparked by player walking out of team meeting prior to Liverpool game
West Brom vs Manchester United player ratings: Saido Berahino scores highest, whilst Marcos Rojo scores lowest
- 3 Drink alcohol and eat meat to improve male fertility - but cut down on coffee, studies suggest
Cameron is warned 'no possibility' of UK reducing immigration and that bid to bring in quota on migrant workers would be illegal
Residents should throw a street party and mix with immigrant neighbours, councils told
Russell Brand threatened with arrest after filming outside Fox News headquarters
London bus driver 'kicks gay couple off for kissing'
Lord Freud: Tory welfare minister apologises after saying disabled people are 'not worth’ the minimum wage
Lord Freud hangs on as MPs of all parties 'call for his head' over disability comments