Borussia Dortmund will reportedly only allow Erling Braut Haaland to leave the club during this summer's transfer window if they receive an offer of at least £150m.
Haaland's future at BVB continues to be called into question, with Manchester United, Manchester City, Real Madrid, Barcelona and Chelsea among the clubs said to be interested in signing him.
There is a €75m (£65m) release clause in the striker's contract, but it cannot be activated until next summer, placing Dortmund in a strong position in the upcoming market.
According to Sky Sports News, the German giants will not sell the Norway international for under £150m and will refuse to be 'bullied' by Haaland's agent Mino Raiola.
The report, though, claims that Dortmund would be placed in a difficult position if they failed to secure Champions League football for the 2021-22 campaign.
The 20-year-old has again been in excellent form at club level this season, scoring 37 times and registering 11 assists in 38 appearances in all competitions.