Sports Direct and Newcastle United owner Mike Ashley is embroiled in a High Court fight with Rangers over a merchandise deal said to result in the Scottish club getting about 7p of every £1 spent.
Bosses at a company within the Sports Direct group say Rangers directors wrongly terminated a deal through which branded products, including kits, were sold and want damages. Rangers' directors dispute the claim.
Deputy High Court Judge Richard Millett has been asked to decide how the litigation should proceed and is analysing evidence at a High Court hearing in London.
In May, Rangers' directors said they were going to rip up contracts held with a merchandise company, Rangers Retail, they ran with a Sports Direct firm.