My understanding is that its a royalty, so there are no obvious associated costs.
Revenue on the Income Statement (2016/2017 Year) for
sales and products is 19.1M Euro (2017), up from 13.5M the previous year (2016). This includes all product sales though, not just jerseys. It also includes licenses to EA and Netflix would be included in this bucket. It also states that included is the organization of the Juventus Academy activities, which I can't imagine would be very profitable as events usually are not.
Income statement expense is related to purchases of products for sale is ~8.2M EUR up from 4.3M EUR, that equals a 10.9M Euro profit (61% profit margin) for 2017 in comparison to 9.2M (68% profit margin) the previous year. This has to do with inventory directly held at stores managed by the company. If we are selling more via a Juventus stores margins will fall.
This my understanding of how it could work (obv # are made up) - ex forecast for Next year:
J-Academy Event Revenue €2M
EA Fee+ €2M
Kits: 20% of sales to Juventus from each kit sale as part of licensing agreement.
Retail Margin from sales in Juventus stores (11%): These of course would have to be bought from Adidas as inventory. And this would be a percentage of sales ie: out of 325k in sales, 50k are from Juventus stores
J-Academy Event Cost €1.8M