Fagan, who is on a season long loan deal at the Essex side, was shown a red-card for violent conduct during Colchesters 4-0 defeat to Rushden and Diamonds on saturday and the Layer Road boss will look at the video of the game before deciding on whether or not to fine the Blues striker.
Fagans disciplinary record certainly doesn't read well since he joined The U's on-loan back in August, the 20-year-old striker has now collected 7 yellow cards plus this latest red one.
A violent conduct dismissal warrants an automatic three game ban.