The Interpenetration of the Branches of Public Law and Private Law on the Example of Possibly Illegal State Aid to Sports Clubs

The subject of this Article is presenting the author's view on the interpenetration of the branches of public law and private law on the example of potentially illegal state aid (in the light of European Union law) for sports clubs. The main purpose of the Article was to answer the question whether the support provided by public authorities to sports clubs constitute illegal state aid and to present that the support instruments used are a good example to demonstrate that it is necessary to distinguish a new concept in the legal doctrine - border law. Exemplary legal solutions regarding the law of the borders were presented and an attempt was made to assess whether there is illegal state aid in the case of support for sports clubs by the public authorities.