Deby County have angered Manchester City by blocking Pep Guardiola's attempt to sign Scott Carson on a permanent deal, because of the Championship club's insistence on collecting a loan fee this month to help pay overdue wages to their players.
The former England goalkeeper, 35, has been on loan at the Etihad Stadium for the last two seasons, with City paying Derby instalments of around £500,000 twice a year to cover the loan fee and Carson's wages.
City want to make Carson's signing permanent during this transfer window and are ready to offer him an 18-month contract.