Arsenal are an English team by name only.
If all other teams were to follow Arsenal's suit and employ just foreigners where do you think our next national team is going to come from? the foreign national teams have their players honing their skills in the premiership to use against England in future competitions and the way we are going in 5 years time we'll be picking our national team from the championship because there won't be any English players left.
Thank goodness for teams like Villa, Everton and Spurs that do value English players and continue to support our national team, unlike the so called "four"