Erling Haaland will command wages of at least £30 million ($41m)-a-year if he leaves Borussia Dortmund for a new club next summer, sources have told ESPN, with Manchester United, Manchester City, Chelsea and Real Madrid all in the race to sign the Norway forward.

Haaland, 21, can reportedly leave Dortmund at the end of this season if a club triggers his €75m ($87m) release clause at Signal Iduna Park. Sources have told ESPN the fee will be inflated by a significant payment to Haaland's representatives for brokering a deal.

ESPN has been told that senior figures from interested clubs have been made aware that Haaland expects a pay deal that would see him earn in excess of £500,000-a-week.