The Nottingham Forest attacker started alongside new Manchester United star Marcus Rashford in a 2-1 defeat for the Young Lions at Doncaster's Keepmoat Stadium.
It was the beginning of a busy period for Walker who will link up with Burton Albion after his international duty.
Nigel Clough sealed a loan deal for the player on deadline day last week and, after a goalless draw against Oldham Athletic on Saturday, will be hoping that Walker can fire his side into the Championship.