Hummel is suing Rangers for £9.5m in lost kit sales as a judge has ordered the club to release sales figures.
Elite Sportswear, the company behind the former kit manufacturers to the Ibrox club, lodged court papers and the Danish firm launched proceedings at the Court of Session in Edinburgh this week.
It is understood that the figures in question relate to club store on Glasgow’s Argyle Street, as well as in Belfast and online.
