Uniqlo wanted to add a brand ambassador. Novak, and just about any player, can be bought out of a contract if the money is right. ST thought their clothing would fly off the shelves and paid a silly fee to get a player in the top 4. The collection didn't fly off the shelves, not a great surprise if you saw their collection and price points. Instead of being stuck servicing his payments, Uniqlo came along at the right time to relieve them of a financial burden. The company/founder has the cash and their aim is not to sell tennis clothes, they retail highly affordable casual wear and Novak is simply an championship winning ambassador for their huge global chain of stores. Novak got paid very well, Uniqlo seem happy with the deal = winners all around.