Rookie-listed West Coast ruckman Tony Olango faces assault charges from an alleged incident just before he joined the club.

The Eagles have confirmed the charges against Olango, continuing a hectic week for the club.

The incident comes a day after midfielder Andrew Gaff received an eight-week ban for striking Fremantle rookie Andrew Brayshaw.

The hit during Sunday's Western Derby left Brayshaw laying with a broken jaw and the ban means Gaff won't make a return to the league until early next season.

The loss of Gaff is a huge blow to the Eagles' premiership campaign.

Now it has surfaced that Olango was charged following an incident on November 25, a day before the Eagles first recruited him through the rookie draft

The incident happened in Darwin, where Olango lives.

Olango was involved in an incident shortly prior to the draft last November which the club became aware of following the rookie draft process," the Eagles said in a statement.

"Since becoming aware of the incident and charge the club has supported Olango and will continue to do so through the legal process."