Jadon Sancho's transfer to Manchester United has hit another stumbling block as Borussia Dortmund have reportedly expressed concerns over the structure of the Red Devils' offer.
With just one week remaining until the transfer window slams shut on 5 October, United are ramping up their pursuit of priority target Sancho.
The club is unwilling to meet Dortmund's £108million asking price for the 20-year-old winger and is instead preparing to table a bid of £90million.
But a substantial proportion of the fee is made up of add-ons and bonuses based on the player's performance - which have alarmed the German club's officials.
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