How long will Aruna be suspended?

In the game vs. Beveren, Aruna hit the referee with his elbow. The question now is how long he will be suspended?
Apparently, Aruna wanted to show the referee what the defender of Beveren did. By doing this, he accidently hit the referee.

Though he reported that the Ivorian did this on purpose.
The Sports committee decides over the case on January 8. The maximum punishment is a suspension of 3 years, though only non-professional players can get this. Aruna risks a suspension of 7 matchdays.