Man City still owe Swansea at least £8million for the transfer of striker Wilfried Bony.
The Ivorian moved to The Etihad in January 2015 for an initial fee which was reported to be £25million, rising to £28million, but in a leaked copy on the transfer agreement posted online by Football Leaks the deal could be worth as much as £33million.
City actually paid £9million up front, plus £5million in VAT. They then paid Swansea a further £8million in January 2016 and are due to pay the Welsh side a further £8million next January.
City may also have to pay add-ons which are related to success in competitions in which Bony, who last scored on Boxing Day, played at least 45 minutes in 60 per cent of their games.
Up to and including the 2018/19 season, City will have to pay Swansea £1million each time they win the Champions League, £600,000 each time they win the Premier League, £300,000 each time they win the FA Cup and £300,000 each time they reach the semi-finals of the Champions League, up to a maximum of £3million.
And if City sell Bony for more than £28million before the end of the 2018/19 season, Swansea would be due 20 per cent of the fee over that amount.
Bony, 27, who started Saturday’s clash at Norwich and was replaced just before the hour mark, has scored just 10 goals since joining over a year ago.