Gameplayer has interviewed FIFA Vice President Andrew Wilson in which he talks about how EA Sports knocked back the opportunity to use Euphoria in their games and why?. He also confirms a number of FIFA related concerns, including the existence of DRM in the PC version of the game.
"Now on to the super cool stuff: NaturalMotion. We had previously speculated that EA was going to buy NaturalMotion to prevent the technology from getting into opposition's hands and thus turning their sport brands into out-dated rubbish. The tech seemed a perfect fit for the genre. We were half right… or half wrong… we guess. Andrew told us that absolutely, discussions on the matter were had, but that ultimately Euphoria didn't work with the FIFA concept. And his reasoning is quite fascinating."