Newcastle and David Klemmer have resolved the disciplinary dispute that threatened to force the forward out of the NRL club.
The Knights stood Klemmer down after the representative forward allegedly verbally abused trainer Hayden Knowles when he was asked to come off during Sunday's loss to Canterbury.
On Friday, the Knights confirmed Klemmer had apologised for his actions, resumed training with his teammates and been issued a suspended fine - the sum of which remains confidential.
"The Newcastle Knights take all Human Resources matters very seriously, and all such matters will be treated in an identical manner," the Knights said.
"The club has instigated a new procedure to ensure due process and procedural fairness is consistently applied, including mediation by the Director of Football prior to escalation of any matters to the Group Chief Executive Officer or Human Resources in future."