The twins, who turned 19 this week, discuss life growing up at United and the thrill of both making their first-team debuts in 2011.
Michael, who has been in excellent form at centre-back for the Reserves, is looking to represent England after previously appearing for Republic of Ireland at youth level.
"I've just made a change," he revealed to Inside United. "Hopefully I'll be playing for England in February. The Under-19s have got a friendly against Czech Republic and I've been told that, hopefully, I'll be involved in that."
Prolific striker Will has already represented England at Under-21 level, appearing twice in European Championship qualifiers last November.
"I'm hoping to stay with the Under-21s," he admitted. "If I keep doing well, Stuart Pearce and his scouts will be watching our games and I will always have a chance of getting called up again."
The interview will appear in full in the March edition of Inside United, on sale on 2 February.