Thought I would also bring up this as well.
When an image is altered such as this, who has rights to the altered image?
This is usually cut and dry.............the original designer or company owns the rights, not to mention that they probably paid royalties on the Adidas logo. So unless you alter the image over a certain percentage then you can not claim rights to your alterations. In fact, in certain circumstances, the original owner can file copyright infringement against anyone altering or using an altered version of the copyrighted image. It's usually the person or company who is monetarily benefiting from the altered design that draws the heat, but in certain cases, they have gone after the persons/designers who altered the image. It's all in grey territory that I won't dive into here.
Then there's the messy realm of fair usage and fan art................these are determined based on how the altered images are used. As long as they are not being used to make money, there's usually no fuss.