Here are the FL rules on it NZ. I hope you are the wiser having read it.
33.7 Home Grown Players. Each Club shall, with effect from the commencement of Season 2011/2012 be required to nominate a minimum of six Home Grown Players on their Team Sheet of Players for all League Competition Matches (including Play Off Matches).
33.8 'Home Grown Player' shall mean a Player who irrespective of his nationality or age, has been registered with:-
33.8.1 his current Club; and/or
33.8.2 a Club and/or any other football club affiliated to the Football Association or the Football Association of Wales,
for a period, continuous or not of three Seasons or 36 months prior to his 21st birthday (or the end of the Season during which he turns 21). For the purposes of this definition of Home Grown Player only, a Season will be deemed to commence on the date on which the first Transfer Window in that Season closes and expire on the date of the final League Match of the Season.
33.9 For the purposes of Regulation 33.8.2, but not otherwise, a Player who was at all times registered with a Club (or club) affiliated to the Football Association of Wales shall be treated as having been registered with a Club (or club) affiliated to The Football Association, and vice versa.
Nothing new there then? Dyche was in charge when this was written.
