This is still just a proposal. But according to the very serious Times, the Football Association (FA) will hand over 20 Premier League clubs this weekend a new step to promote their trip to the Brexit era, which will begin on March 30, 2019 to end on December 30, 2020.
The city far exceeds the future quota
In the project, a significant reduction in the number of foreign players in the world of work. Starting in 2020, the FA will require that every team, for the sake of its finances in respect of taxes to be paid if there are too many foreign employees, there are only 12 non-English players in it. At present, this site is very large.

And for good reason. 13 Premier League clubs are currently above this future quota. At the top of the standings, Manchester City, whose manager Pep Guardiola is Spanish, has 17 foreign players. Maximum allowed at this time.
Tottenham, Brighton, Huddersfield and Watford are in the same configuration while on the contrary, Arsenal and Manchester United will be close to the standard of this new size in the squad of big English teams (15 and 14).
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As a result, the FA also wants to ensure that every formation in the country seeks to promote a number of English players in the first team.
At present, the average level of English players in the Premier League is around 28%. Too weak for the FA that makes this measure of capital and turn necessary to ensure the Premier League is free entry into unknown Brexit.