Tottenham midfielder Eric Dier challenged Chelsea midfielder Cesc Fabregas after Monday's all-in brawl.
The Daily Mail says Dier made a threatening gesture to Cesc in the aftermath of the Battle of the Bridge.
The midfield pair clashed throughout the 2-2 draw that ended Spurs' hopes of winning the Barclays Premier League title.
The England international's gesture shocked eye-witnesses as both teams clashed by the entrance to the tunnel after the final whistle.
Cesc allegedly had goaded his rivals constantly during the ill-tempered match.