What part of the world and from which language do you think the word 'football' comes from? Laws were passed in medieval England banning a ball game specifically referred to as "football". Have you got evidence this word was used to describe a ball game played anywhere outside the British Isles before the 14th centaury? If so I would like to see it.  

 There were of course other versions of this game played in medieval Britain, Ireland & France under different names such as Anglia Campball, Cornish Hurling, Welsh Cnapan, Irish Caid and French La Soule. These games played at Shrovetide or times of other religious festivities are the true forerunners of modern football. They were played by peoples with close historical and social connections. The earliest recoded game was indeed played in England in London during Shrovetide c.1175. And there is verifiable documented evidence to support the history of these games as required by Wikipedia.  

 The origin of the Shrovetide ball game is unknown. However, circumstantial evidence points to Roman/Greek /Celtic/Viking sources. I have never seen a shred of evidence that supports alternative origins theories that stand up to scrutiny. What you are doing by re-branding games played in other parts of the world as "football" is distorting the history of those people and misleading the reader. By any academic standards that has to be unethical.