Ex-Manchester City midfielder Samir Nasri has had his doping ban for using a drip treatment at a Los Angeles clinic increased from six to 18 months.
It follows an appeal against the original sanction, given to the Frenchman by Uefa in February.
The ban is backdated to 1 July 2017, even though Nasri, 31, has made eight appearances for Turkish side Antalyaspor since then,
He is now a free agent and can return to training with any club in November.
Nasri took the drip treatment while on holiday in 2016, but it contravened World Anti-Doping Agency (Wada) rules leading to a Spanish Anti-Doping investigation.
At the time the ex-France international was on loan from Manchester City to Sevilla.
Wada rules state there is a 50 millilitre infusion limit per six-hour period for active athletes but it was alleged he received 500 millilitres of hydration in the form of sterile water containing micronutrient components.
In February 2017, a request by Sevilla for a retroactive therapeutic use exemption (TUE) for Nasri was refused by Uefa, and its decision was later upheld by the Court of Arbitration for Sport.
On Wednesday, Uefa’s ethics and disciplinary inspector argued that ban was insufficient and European football’s governing body extended it by 12 months.
Nasri’s spell with Antalyaspor lasted only six months after he joined from Manchester City in August 2017.
He played for Arsenal from 2008 to 2011 before moving to City for £25m, going on to win the Premier League twice during his time at Etihad Stadium.
During his loan spell at Sevilla last season he made 30 appearances and scored three goals.
Samir Nasri was banned from football following an investigation into the intravenous drip treatment he received at a Los Angeles clinic.
The player’s legal representative in the case has confirmed that a six-month suspension has been imposed on Nasri by Uefa.
Former Arsenal and Manchester City playmaker Nasri received 500 millilitres of hydration in the form of sterile water containing micronutrient components on December 26, 2016, while on holiday.
At the time, he was on loan from City to Sevilla, and Nasri had reported feeling ill and vomiting before calling a doctor, his Maryland-based former girlfriend Dr Sarabjit Anand, who provided an initial diagnosis.
Nasri, who is a free agent, can return to training with any club from November.
A UEFA statement said: “The UEFA Control, Ethics and Disciplinary Body’s decision of 22 February 2018 is amended as follows:
“1. The player Samir Nasri is suspended for eighteen (18) months. This suspension will start running on 1 July 2017.
“2. The player Samir Nasri is allowed to return to training, with any football club starting from 1 November 2018.”
Nasri received treatment from a private medical company, Drip Doctors, in his hotel room and later posed for a photograph with the organisation’s co-founder Jamila Sozahdah that drew publicity.
World Anti-Doping Agency rules state there is a 50 millilitre infusion limit per six-hour period for active athletes. A request by Sevilla for a retroactive therapeutic use exemption (TUE) for Nasri was refused in February 2017 by Uefa, whose decision was later upheld by the Court of Arbitration for Sport.
Spanish sport newspaper Marca reported Nasri has been banned for one year, stating Uefa will confirm that on Monday, however Nasri’s lawyer, who wished not to be named, disputed that figure.
He confirmed Nasri has received a ban, saying in an email: “Indeed. But he has received only six months suspension.”Nasri is currently without a club, having left Antalyaspor in January after just six months with the Turkish team.
The 30-year-old former France international played for Arsenal from 2008 to 2011 before moving to City for £25 million, going on to win two Premier League titles during his time at the Etihad Stadium.During his loan spell at Sevilla last season he made 30 appearances and scored three goals.