Manchester City are reportedly concerned that they will be unable to sell Samir Nasri this summer due to the France international facing a possible drugs ban.
The 30-year-old is deemed surplus to requirements by City boss Pep Guardiola and spent last season on loan at Sevilla, but the club are keen to offload him on a permanent basis this summer.
However, Nasri is currently the subject of a UEFA probe into an alleged breach of doping rules, having been provided with an IV drip at an intravenous therapy clinic in LA last year.
A number of clubs are thought to be interested in the midfielder, including the likes of AC Milan, Besiktas, Galatasaray and Shanghai Shenhua, but the Daily Mail reports that a drugs ban is likely to scupper any deal.
Nasri could face a ban of up to four years if he is found to have breached anti-doping rules, which could leave City lumbered with his wages for the remaining two years of his contract.
Should that be the case then it could cost City up to £25m to keep Nasri despite him being ineligible to play during that time.
IV drips are banned by the World Anti-Doping Agency unless administered in quantities of no more than 50 millilitres per six-hour period, or when a certificate of special dispensation on medical grounds has been obtained.
