Leeds United were left furious after Marcelo Bielsa’s £10m bid to sign Swansea winger Daniel James collapsed in the final minutes of deadline day.

Andrea Radrizzani, the Leeds owner, had agreed a £1.5m loan fee with Swansea, with the obligation to sign the Wales international permanently for a further £7m if the club earn promotion to the Premier League. Further instalments would have taken the deal up to £10m.

James had passed a medical in Leeds earlier that day but the transfer fell through after Swansea’s board made a late U-turn, insisting they were unhappy with the payment terms barely an hour before the 11pm deadline.

It is alleged there was a conflict between chairman Huw Jenkins and the club’s American owners, Steve Kaplan and Jason Levien, over the sale of the winger.

Swansea were already under scrutiny for the departures of a number of key players since relegation, with Jefferson Montero (West Brom) and Tom Carroll (Aston Villa) also leaving on deadline day.