Former Celtic Warriors owner Leighton Samuel will take the first serious step in his legal action against the Welsh Rugby Union on Friday morning.
The dispute is over Samuel's sale of his 50% share to the WRU and the region's subsequent closure.
BBC Wales understands that Samuel is alleging a misrepresentation of sale.
Samuel claims he was given assurances that the Warriors would remain in business if he sold his share. The Union is understood to dispute this.
A statement issued by Samuel's lawyers in October 2004 said that "the value of the claim is well in excess of £1,750,000".
Barristers representing both parties will have a case management conference with a High Court judge.
Samuel's barrister and the barrister representing the WRU will talk with a High Court judge via a telephone conference in a meeting called a "case management conference".
This will enable the judge to decide how the case should proceed.