On loan Chelsea defender Papy Djilobodji is likely to find himself with the German Football Association (DFB) after making a throat-slitting gesture at his opponent.
The 27-year-old, who played barely a minute for the Blues after a summer transfer from Nantes, clashed with Mainz midfielder Pablo De Blasis during Werder Bremen's 1-1 draw at the weekend.
After bundling De Blasis over, Djilobodji turned to him and run his finger across his throat, although referee Manuel Graefe missed the incident.
The DFB will review the case on Monday, but a previous ruling on a similar incident could spell bad news for the Senegalese defender.
Deniz Naki, then of St Pauli, was banned three matches after making a similar gesture in November 2009 - although he aimed it at opposition fans rather than another player.
Werder Bremen sporting director Thomas Eichin later played down the incident.
"I'll have a serious talk to him about it and he won't do it again in the future," he said.
Bremen are currently just a point above the Bundesliga relegation zone.
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