Haris Vuckic and Gael Bigirimana are set for run-outs at Norwich City this afternoon.
Forward Vuckic and midfielder Bigirimana are no in Rafa Benitez's plans at Newcastle United.
And the pair spent pre-season with Peter Beardsley's Under-23 squad, who kick off their Premier League 2 campaign with a fixture against Norwich at their Colney training ground (2pm kick-off).
Football development manager Beardsley said: "I think the first day of any team's season is exciting.
"It really is exciting. Us and Norwich both came down together unfortunately, but they're a great club. Their first team had a brilliant start to the Championship and they play great football.
"They have a lot of good young players, so it'll be an exciting game and a good game for us to start with.
"My philosophy is always to play well, and obviously ideally win, no doubt about that, and it's important for them mentally."