Once considered among the top midfielders in world soccer, Paul Pogba’s career risks a premature ending after the Juventus player and France international tested positive for testosterone.

Italy’s anti-doping agency announced the failed drug test on Monday.

The examination was carried out after Juventus’ game at Udinese on 20th Aug. Pogba did not play in the Serie A match but was on Juve’s bench.

Nado Italia, the anti-doping agency, said that Pogba was suspended provisionally with immediate effect. Pending a trial and testing of a backup “B” sample, he risks a suspension of up to four years. If the backup sample confirms the positive test, the 30-year-old Pogba could get a lesser ban if he cooperates with authorities.

It’s another negative note for a player who has been bothered by injuries ever since rejoining Juventus from Manchester United a little more than a year ago. He was ruled out of France’s run to the World Cup final last year due to a knee injury and played in only six Serie A matches for Juventus last season.

There’s also been a police investigation ongoing in France into allegations that Pogba was targeted by extortionists — including by his older brother, Mathias, who has denied any wrongdoing.

The latest blow to Juventus follows last season being marred by inquiries into false accounting and irregular reporting of salary payments. The legal cases resulted in the Turin club being removed by UEFA from European competition this season.