The Rebels have fined Amanaki Mafi and Lopeti Timani each 15,000 Australian dollars following an incident in Dunedin which saw the former arrested and charged for injuring with intent to injure.
Mafi allegedly assaulted team-mate Timani after a 43-37 defeat to the Highlanders on Saturday and, having appeared at court on Monday, he has been released on bail.
But the Rebels have punished both players for their involvement, according to a statement widely released to the Australian media, with reports suggesting the pair had broken curfew before the incident took place.
Mafi and Timani are both out of contract at the end of the season and, while the latter appears set for La Rochelle, the former had reportedly been in talks over a new deal.
The Rebels' statement suggested both players will leave.
"Notwithstanding that both Amanaki Mafi and Lopeti Timani were finishing at the Rebels this season and heading overseas to continue their playing careers, it is only appropriate, given the seriousness of the incident, to sanction both players with a significant fine," said chief executive Baden Stephenson.
"Along with the Rebels board, head coach David Wessels and club management, we have strived this year to re-build a culture which values respect and excellence in everything we do.
"The actions of these two players is totally contrary to our club's values and has tarnished the excellent work of so many in the club, both on and off the field this season.
"I only hope that both Amanaki and Lopeti genuinely reflect on and learn from this very troubling incident.
"The club has supported both players over recent days and will continue to ensure their well-being now and into the future."
Mafi's court case has been adjourned until August 3, with his bail set on the condition he does not associate with Timani.
Rugby Australia confirmed it may impose further sanctions on Mafi pending the outcome of the case.
|Yedlin knee injury not serious, Newcastle confirm|
|Bartomeu satisfied with Barcelona squad amid Pogba links|
|BREAKING NEWS: Kevin De Bruyne suffers knee injury|
|Steelers QB Roethlisberger in concussion protocol|
|Kehrer to PSG not complete, say Schalke|
|Hopoate handed 10-year ban from NSWRL|
|Is this worth it? Injuries prompted Te´o to consider future|
|Croatia hero Subasic retires from international football|
|Iniesta makes it two in two for Vissel Kobe|
|Chelsea send out defensive duo on loan|
|Zaha 2023: Palace star means more than goals|
|De Jong set for Ajax stay despite Barcelona interest|
|Serena ´still at the very beginning´ of comeback|
|Ajax can benefit from Mourinho approach - Blind|
|Foley not convinced by reports All Blacks will drop Barrett|
|Zaha signs Crystal Palace extension|
|Burnley midfielder O´Neill makes A-League loan move|
|Godin yet to renew with Atletico Madrid amid transfer interest|
|Federer ´feeling better every day´ after Wimbledon disappointment|
|Kante comfortable with surprise new Chelsea role|
|Rugby Championship 2018: The numbers behind New Zealand´s dominance|
|LaLiga 2018-19: Bale ready to be Madrid´s shining light after five years in Ronaldo´s shadow|
|Rodgers unimpressed by absence of ´fit´ Boyata|
|Braves´ Acuna Jr. has arrived as a true MLB star|
|LA Galaxy 2 Colorado Rapids 2: Jackson´s deflected strike sees spoils shared|
|Victory offer postponed retirement, says Honda|
|Kyrgios forgets tennis shoes, Federer back in business|
|Williams knocked out as Garcia and Pliskova advance in Ohio|
|Kvitova sees off Serena in Cincinnati classic|
|Federer dispatches Gojowczyk in Cincinnati|
|Stead succeeds Hesson as New Zealand coach|
|Duminy encouraged despite South Africa´s mixed results|
|Thiem withdraws from Cincinnati Masters|
|Edwards joins Ospreys in consultancy role|
|Former Arsenal and Barcelona player Song joins Sion|
|I´m very happy with what I have - Spalletti not desperate for Modric|
|Roethlisberger evaluated for concussion after practice|
|Brady ´absolutely´ expects to face Eagles|
|Rugby Championship 2018: Reasons for optimism and concern for Australia|
|Wentz ´gonna be close´ for Eagles opener|
|Cleveland ´victory fridges´ to unlock beer if Browns finally win|
|England´s Watson suffers injury setback|
|Mariners reinstate Cano after 80-game suspension|
|AEK Athens 2 Celtic 1 (3-2 agg): Rodgers´ men dumped out of Champions League|
|Alonso to leave F1: Paddock reacts to Spaniard´s exit|
|Roma sign midfielder N´Zonzi from Sevilla|
|Alonso to leave F1: Who will replace Fernando at McLaren?|
|Extraordinary Zidane is in Real Madrid´s past - Lopetegui|
|Alonso to leave F1: Then and now - how the grid, teams and calendar have changed since 2001|
|Wawrinka and Azarenka receive US Open wildcards|
|Parma sign Napoli pair Inglese and Grassi on loan|
|Sandakan castles Proteas before Sri Lanka squeeze home|
|Ronaldo sale won´t stop Real Madrid winning - Ramos|
|Predators sign Ryan Ellis to eight-year, $50M contract|
|Curran, Woakes, Rashid - who makes way for Stokes in England´s Test XI?|
|Griezmann well positioned for Ballon d´Or, says Simeone|
|Criscito: I was on Genoa bridge shortly before collapse|
|Alonso to leave F1: How the Spaniard´s numbers stack up to the greats|
|Rookie LB Roquan Smith finally signs Bears contract|
|De Villiers enjoying relief from ´unbearable´ Proteas pressure|
|Fernando Alonso to leave F1|
|Spalletti extends Inter contract|
|Godin, Koke, Griezmann and Juanfran named Atletico Madrid captains|
|Ronaldo out of hospital after illness|
|Fury: Beating Wilder and Joshua ´very easy´|
|Dickinson retires to take up academy coaching role|
|Cricket the ´sole focus´ for Stokes as he returns to England squad|
|Cheryshev moves to Valencia on loan|
|Mandzukic retires from Croatia duty after World Cup|
|Ben Stokes found not guilty of affray|