Madjid Bougherra and Charlie Mulgrew have had their red cards downgraded to yellow cards by the Scottish Football Association review panel.
Bougherra was shown a straight red card after sliding in and catching Aberdeen goalkeeper Jamie Langfield in the face during Rangers' 2-1 win at Ibrox last weekend.
Aberdeen full-back Mulgrew was also controversially sent off in the first half at Ibrox after Kyle Lafferty fell theatrically to the ground as the pair went head to head.
Rangers and Aberdeen appealed the dismissals and after reviewing footage of the Ibrox incidents, referee Stuart Dougal has decided that neither Bougherra nor Mulgrew should have been sent off for violent conduct.
The review panel have now downgraded Bougherra and Mulgrew's punishment to yellow cards allowing him to feature this weekend.
Bougherra will be available for Rangers' title-decider at Tannadice, while Mulgrew can play in Aberdeen's home game with Hibernian.
Lafferty, who was fined by the Ibrox club for play-acting in the incident which saw Mulgrew sent off, will have to defend an "alleged act of simulation" by the SFA's disciplinary committee after the review panel decided he had a case to answer.
Meanwhile, Celtic defender Glenn Loovens will also face the disciplinary
committee as will team-mate Scott McDonald.
Loovens was reported to the panel over a challenge on Rangers midfielder
Maurice Edu during the Old Firm derby at Ibrox on 9th May.
McDonald was referred by Dougal after the referee examined TV footage of his tackle on Dundee United defender Lee Wilkie three days later.
The disciplinary committee will not meet until the summer and any potential
suspension would take effect next season.
Consequently, both Celtic players will be free to face Hearts on Sunday, while
Lafferty is available for Rangers' trip to Tannadice.