Talks have failed to resolve a bitter row between Rory McIlroy and his former agents.
The world number one is suing Horizon Sports Management - partly over claims he got an inferior package to fellow golfer Graeme McDowell.
The High Court case will go to a full hearing after mediation between the sides ended without agreement.
The golfer is suing the Dublin based management company and two other companies - Gurteen Ltd and Canovan Management Services, another Dublin based company.
McIlroy is seeking to void the contract he signed with Horizon in 2011. McIlroy alleges that when he signed the deal in 2011 he was inexperienced – then 22-years-old – and without legal advice. McIlroy says the agreement is not valid, on the grounds of that he was under ‘undue influence’.
McIlroy also claims he signed his deal with Horizon on inferior terms to fellow major winner Graeme McDowell.
Last month, a Commercial Court judge urged the sides to try to resolve the row. Last month’s Ryder Cup, at which McIlroy and McDowell played together as part of the European team, brought respite from the talks, with the Commercial Court hearing last week that the talks were to continue.