Bale has been a huge hit at Real Madrid since signing from Tottenham for £80million back in 2013.
The Wales international has helped the club win two Champions League titles in three years – scoring in the 2014 final victory over Atletico Madrid.
His rise to the top means he is regularly linked with a move back to England.
He pledged his future to Madrid last year by signing a new five-year deal worth £350,000-per-week.
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Manchester United and Chelsea want to sign Gareth Bale from Real Madrid
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Gareth Bale is currently sidelined through injury
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But Manchester United and Chelsea remain keen on luring him to the Premier League.
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And Spanish outlet Don Balon claim both clubs are prepared to pay £172million to bring him back.
United have wanted Bale dating back to his days in the Southampton academy.
They lost out to Spurs in 2007 and were gazumped by Madrid during David Moyes' time in charge.
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Manchester United have been keen on Gareth Bale dating back to his time at Southampton
It is claimed they are confident a deal can be struck despite the player being happy in Spain.
His failure to oust Cristiano Ronaldo as the club's main man could mean he opts to leave to be a talisman elsewhere.
And the prospect of being the player who clubs have paid the most for throughout history represents an added incentive to leave the Spanish capital.
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