Simplify the following text for a Grade 4 native English-speaking person.
Original: As part of the same deal it was agreed that any reference made to Milton Keynes Dons F.C. should refer only to events subsequent to 7 August 2004 ( the date of the first League game of Milton Keynes Dons F.C. ) .
Simplified: Milton Keynes Dons F.C. are an English football club .