Barcelona have opened talks with Manchester City over the potential transfer of Nathan Ake, who currently plays as a defender. Negotiations are active and ongoing after an opening bid was submitted, though there is reportedly still some distance between the clubs on valuation. However, discussions are said to remain open and constructive - as both sides explore whether there is a deal to be done. Until a fee and conditions are finalised, the deal remains vulnerable to disruption - especially if Bournemouth, Crystal Palace and Tottenham decide to make a formal offer of their own in the coming days. With only 20 goals conceded in 18 (1.11 per game), Barcelona have been one of the stronger defences in the LaLiga this season.. Nathan Ake would be asked to keep that standard and provide dependable cover when needed. Manchester City continue to be linked with Harry Gray, Christ Ravynel Inao Oulai and Jeremy Monga while Barcelona are also rumoured to be tracking Marcos Senesi, Josko Gvardiol and Pau Torres. Stay tuned for more details as the story develops. Need more Barcelona transfer rumours? Follow @PlayerSwitchCom on Twitter for news and updates as they happen.