Complex sentence: De Dijk is the first amateurs football club to partner with the John Blankenstein Foundation, by partnering with Right to Play the clubs'youth teams play with the RtP print on the shirt, while a portion of the proceeds are then donated to the cause of their charity.
Split into simpler sentences: De Dijk is the first amateur football club to partner with the John Blankenstein Foundation. By partnering with Right to Play the club's youth teams play with the RtP print on the shirt, and a portion of the proceeds are donated to the cause of their charity.