Edited sentence: (1)'Home Grown Players' rule which aims to encourage the development of young footballers at League clubs.(2)For the first time clubs will also have the opportunity to name seven substitutes (previousley five), three of which may enter the field of play (no change).Financial regulations relating to tax payments.From now on, any club that falls behind with its employee related payments to HMRC will be subject to a transfer embargo until such time as the debt is cleared.The new rule will require clubs to name at least four players in their matchday squad that have been registered domestically, for a minimum of three seasons, prior to their 21st birthday