Manchester City have been charged by the Football Association for allegedly breaching their rules on anti-doping, it was announced yesterday.
A short statement released by the FA read: "Manchester City have been charged in relation to The FA's Rules on Anti-Doping.
"It is alleged the club failed to ensure that their 'Club Whereabouts' information was accurate, contrary to Regulation 14(d)."
FA rules state that all clubs must provide information on dates, times and addresses of training sessions and the home addresses of players who in turn have to confirm their whereabouts to make themselves available for random drug testing during an hour slot between 06:00 and 23:00 on any given day.
A club can be in breach of this regulation if they do not keep this information up to date or notify the FA when it changes, and it is understood the breach relates to City's updated training schedule.
According to the FA's disciplinary regulations, City could face punishment of anything from a warning to expulsion from membership of the association. However, as the breach appears to be an administrative error, if City are found guilty they are likely to face a financial penalty.
The club have until Thursday, January 19 to respond.
It is understood that the alleged rule breach does not relate to the ongoing situation surrounding Samir Nasri, the on-loan City midfielder who is the subject of a Spanish anti-doping authority investigation.
Nasri could be banned for up to four years by the World Anti-Doping Agency (WADA) if found guilty of breaching its rules.
Nasri, on a season-long loan at Sevilla, is being investigated by the Spanish Agency for Health Protection in Sport (AEPSAD).
He will have to explain the intravenous drip treatment he is said to have received at a Los Angeles clinic amid concerns he may have violated anti-doping rules.
AEPSAD, which handles doping issues, said last month on its official Twitter feed: "AEPSAD has initiated the appropriate steps to clarify what treatment was received by Samir Nasri."
According to the Drip Doctors clinic, Nasri received its "Immunity IV Drip".
The clinic stated that the treatment involves one litre of hydration and is designed to "combat superbugs and common viruses".
WADA rules state that there is a 50 millilitre limit for active athletes.
The agency's prohibited list includes "intravenous infusions and/or injections of more than 50ml per six-hour period except for those legitimately received in the course of hospital admissions, surgical procedures or clinical investigations."
WADA is awaiting the AEPSAD report on this matter.
Meanwhile, City have reportedly been given a transfer boost with Paris Saint Germain agreeing to let Jese Rodriquez and Grzegorz Krychowiak leave.
The French club are reportedly open to letting the pair leave and that they are both targets for manager Pep Guardiola who wants to fill gaps left by the injured Ilkay Gundogan and Vincent Kompany.
Forward Rodriquez has failed to make an impression at PSG since his arrival from Real Madrid in the summer.
Poland midfielder Krychowiak only joined in the summer from Sevilla, but has started just nine games. City could also find themselves in a transfer tug of war for Juventus forward Paulo Dybala, who has four goals in 11 games in Serie A this season.