Martyn Waghorn’s former club Rangers would receive a significant windfall should the Blues striker move on to Derby County or elsewhere this summer.
According to the Daily Record, the Ibrox club inserted a 10 per cent of profit sell-on clause when the 28-year-old moved to the Blues for a bargain £250,000 last August.
Derby are in talks with the Blues regarding an £8 million deal, which therefore could ultimately be worth £775,000.
However, the deal the Rams are currently proposing is understood to be an initial £5 million up front with the rest after clauses are triggered.
Town, who don’t want to sell Waghorn, are unlikely to accept an offer along those lines but a bid of around that size with a larger proportion of the cash up front may well tempt them to part with last season’s 16-goal top scorer. Contrary to reports elsewhere, Waghorn has not made a transfer request.
TWTD previously revealed that Middlesbrough and Birmingham City are also interested in Waghorn, while Nottingham Forest have been linked. Sheffield United have ruled themselves out of the race due to Town's valuation.
Derby are close to completing the signing of former Blues frontman Jack Marriott from Peterborough but that deal is understood not to have an impact on the Rams' pursuit of Waghorn.