Puma have backed Borussia Dortmund to "draw the right consequences" from Pierre-Emerick Aubameyang celebrating his goal during Saturday's Revierderby against Schalke by wearing a mask apparently supplied by his boot sponsor Nike.
Aubameyang opened the scoring with his 24th Bundesliga strike of the season in the 1-1 draw at Veltins Arena and reprised his famed celebration.
Having previously sported the facewear of comic book superheroes Batman and Superman, Aubameyang's mask on this occasion resembled one depicted in a promotional campaign with Nike last month.
Puma are Dortmund's kit manufacturer and, after the Bundesliga club's chief executive Hans-Joachim Watzke promised a "difficult" conversation if Aubameyang was promoting a personal sponsor, the German-based sportswear giant expressed surprise at Nike's presumed involvement.
In a statement issued via German sports news agency SID, Puma said: "We are convinced BVB will draw the right consequences from this incident.
"We are surprised that a competitor puts a player in that kind of a situation."
Before concerns over commercial motives came to the fore, Dortmund boss Thomas Tuchel defended Aubameyang's celebration, while the player himself dismissed suggestions his actions were "arrogant" in an Instagram post.