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Let's say Arsenal teams up with a team in the lower divisions like Bournemouth AFC (it can't be a storied club like Nottingham Forest due to their history and the higher probability of them getting back into the championship—no offense to Bournemouth there).
Arsenal then says they will inject some cash to upgrade facilities and technology, etc. They would share training knowledge and coaches could go either way to learn and impart knowledge.
Through all that, Arsenal would have first dibs on the hottest talents the club produces. Talents that would be English of course.
These much smaller clubs would have access to more resources and Arsenal in turn would have access to more players. If things work out really well, then a number of successful players could come from this partnership.
This is not to say that Arsenal would get to snatch every and any player that comes from the club, but they would certainly have first choice.
The players would benefit, the clubs would benefit and essentially the league would benefit.