Juventus midfielder Paul Pogba has tested positive for testosterone following their Serie A clash with Udinese, according to the Corriere della Sera.
The report claims Pogba has three days to respond to the charge.
It is normal procedure for players to undergo anti-doping tests immediately after matches in most elite European leagues.
Pogba featured against Bologna and Empoli before his test was allegedly confirmed to maintain traces of testosterone.
The former Manchester United midfielder must now produce a counter-analysis of the result.
If Pogba is found guilty, bans for doping in Serie A can carry suspensions from playing lasting between two and four years, leaving the 30-year-old in significant trouble.