Valencia are reportedly after more money from Manchester City for centre-back Nicolas Otamendi after the terms of a proposed deal changed yesterday.
The Argentine has been heavily linked with a move to the Premier League all summer, and it finally seemed to be on the cards yesterday when City struck a deal with the La Liga club.
The former Premier League champions were due to pay £28.4m for Otamendi, while current City defender Eliaquim Mangala would go to Spain on a season-long loan.
However, Sky Sports News claims that boss Manuel Pellegrini wants to keep Mangala at the club, forcing City to pay more money for Otamendi.
The 27-year-old is understood to have a £35.5m buy-out clause in his contract.