Shakhtar Donetsk forward Luiz Adriano has been charged by UEFA following his controversial goal against Nordsjaelland.
The extraordinary incident followed a stoppage in play when a Nordsjaelland player was injured during their Champions League match in Denmark.
Adriano enraged Nordsjaelland players and fans by racing to collect team-mate Willian's kick downfield, which was intended for the home goalkeeper.
The Brazilian striker ignored watching defenders, dribbled around the 'keeper and shot into an empty net, to the astonishment of all, even his own team-mates.
UEFA says it opened a disciplinary case against him for "violation of the principles of conduct" in Tuesday's match in Denmark.
The case will be judged next Tuesday.
Adriano's goal made it 1-1, and he eventually scored a hat-trick in a 5-2 win that made sure Shakhtar advance to the last 16.
"Their striker didn't get it," Nordsjaelland captain Nicolai Stokholm said. "I looked down at my armband and there's something about respect. It has to be said we didn't see much of that.
"We thought that they would give us a goal. Half their team seemed to think so too, but the other half didn't."