Reports suggest Real Madrid have launched a world record bid of around €100m (£87.21m) for Bale and one team that will be wincing at those figures more than most are Southampton.
That is because when the Saints sold Bale to Tottenham in 2007, they inserted a 25 per cent sell-on clause only to then renegotiate it one year later when they ran into financial difficulties.
The initial deal that brought Bale to White Hart Lane was £5m with an additional £5m in potential add-ons and the 25 per cent sell-on clause.
However, the following year, Southampton agreed to take a one-off payment of £3m to waive any future income from Bale. They also got young Tottenham goalkeeper Tommy Forecast as part of the deal but he never played a senior game for the Saints.
That decision could now end up costing them over £20m if Bale does indeed get sold to Real Madrid.
Southampton also implemented a similar deal with Arsenal in regards to Theo Walcott but he at least remains at the Emirates.
Still, at least Southampton's story has a happy ending, the club was taken over in 2009 which cleared up all their financial difficulties and they have since risen from League One to the Premier League.