Cian Healy is available for Leinster's Pro12 match against rivals Munster on Sunday following an appeal hearing but will now face a new hearing of his original charges at a later date.
Healy was cited over an incident involving Guilhem Guirado in Leinster's European Champions Cup match against Toulon earlier this month.
An initial charge against the Ireland prop of striking with the knee was downgraded to one of "dangerous charging or obstructing or grabbing of an opponent without the ball, including shouldering".
Although the 28-year-old forward successfully appealed the amended charge, the original citing complaint will now be reheard at a later date by a different judicial officer.
A European Professional Club Rugby statement on the matter read: "An independent Appeal Committee has today (Wednesday, 23 December 2015) allowed an appeal by the Leinster Rugby player, Cian Healy, against the two-week suspension imposed on him as a result of a citing complaint following his club's European Rugby Champions Cup Round 3 match against RC Toulon.
"The Appeal Committee determined that the decision of the independent Judicial Officer at a Disciplinary Hearing on Thursday, 17 December 2015 should be set aside, and Healy is therefore free to play with immediate effect.
"However, the Appeal Committee also decided that the original citing complaint against the player should be reheard at a later date by a different independent Judicial Officer from the Disciplinary Hearing.
"The Appeal Committee consisting of Professor Lorne Crerar (Scotland), Chairman, Rod McKenzie (Scotland) and Roddy Dunlop QC (Scotland), heard submissions by video conference on behalf of Healy by Leinster Rugby's legal representative, Donal Spring, and on behalf of the EPCR Disciplinary Officer, Liam McTiernan."