The Northern Ireland Football League has endorsed the Irish FA's decision that Warrenpoint Town's Darren Forsyth is eligible to play for the club.
The IFA had been investigating the Forsyth case but ruled on Thursday that he had not broken any rules.
On Friday evening, the NIFL said that it "acknowledged" the IFA's decision that Forsyth was not in breach of any eligibility regulations.
The saga had followed Forsythe's recent move from Glenavon to Warrenpoint.
The probe into Forsyth's eligibility focused on whether his transfer from Glenavon had broken Fifa rules because Warrenpoint were alleged to be his third club this season.
Under the Fifa regulations a player can only appear for two teams in a season.
However, Forsyth played for a junior team in the Republic of Ireland, and Fifa's definition of a season relates to the top division in any given country.
In the Republic, top-flight fixtures run from March to October.
A statement released by the IFA on Thursday explained that they had "carried out a thorough investigation" and considered "all relevant rules" before reaching their conclusion.
Coleraine would have been reinstated to the Irish Cup if Town had been expelled from the competition.
If found guilty of breaching rules, the Milltown club would also have been deducted five points accumulated from Premiership games in which Forsyth featured, against Ballinamallard United, Cliftonville and Glenavon, and fined £600.
Warrenpoint will face Linfield in the Irish Cup sixth round on Saturday.