Borussia Dortmund have offered to triple Robert Lewandowski's wages in an attempt to stop him leaving the German club this summer, reports the Daily Express.
The Pole has only 12 months to run on his current deal and is widely expected to leave next summer with Bayern Munich being his preferred destination.
Despite his desire to join the Bavarian giants, Manchester City, Manchester United and Chelsea have all reportedly expressed their interest in signing Lewandowski this summer.
Dortmund are desperate for their star striker to move abroad as opposed to joining their biggest rivals and Chelsea believe they can tempt the club in to selling with a £40m bid.
The Express reports that Jose Mourinho will attempt to bring the 24-year-old to Stamford Bridge if he fails in his pursuit of Wayne Rooney.
But a deal has been struck between the striker and the German club that sees his wages increased from £20,000-a-week to £60,00-a-week to ensure he stays at the club for the final year of his deal.
Respected German journalist Raphael Honigstein revealed the pay rise is nothing but an attempt from the club to keep their star striker motivated and professional throughout his final year.
He also believes that Chelsea's interest will ultimately amount to nothing.
He added on Twitter: "The 'Lewandowski going to club XYZ' game has been over since February. Only question was: Bayern this or next season."