I don't think they will. There's a significant increase in next year's FFP to £13m - which will then go to £39m over 3 seasons starting season 16/17 - and, as far as accountancy is concerned, the cost of all those transfer fees will be spread over the course of the players 3-4 year contract...
If he was unknown to us and playing in a foreign league, we'd be ******* ourselves silly over a young flair player like him based on nothing other than his YouTube show reel.