Thomas Müller to Leave Adidas? Müller Trains in Blackout Adidas X 15 Boots

FC Bayern München striker Thomas Müller returned to pre-season training in early July 2015 wearing a blacked-out version of the new Adidas X 15.1 Boots, which is usually an indication that a player and a brand go separate ways. But will Thomas Müller leave Adidas?

Thomas Müller was one of the first players to lace up in blackout Adidas X Prototype Cleats last year, while he previously had been a long-term Adidas F50 Adizero player.

Thomas Müller trains in unbranded Adidas Cleats

Thomas Müller laced up in blackout Adidas X Boots during all FC Bayern Munich training sessions.

The German international surprised the boot world with his unbranded Adidas X Boots in all FC Bayern Munich pre-season training sessions, despite the fact that he is a global face of the Adidas X campaign.

The blackout Adidas X Thomas Müller Boots feature a stealth look with no pop-up colors, similar to his Adidas X 15.1 Prototype Boots.

Interestingly, Thomas Müller also carried the regular Solar Yellow Adidas X 15.1 Boots with him, which lead us to the conclusion that Thomas Müller is having problems with his Solar Yellow Adidas X Boots and won't switch brands.

Thomas Müller x Adidas. Do you think that Thomas Müller, who is likely the most popular German national team player, will ever leave the Three Stripes? Let us know in the comments section below.