Lewis Leigh, Josh Seary, Noah Mawene and Joe Rodwell-Grant have had game time in some of the friendlies to date.
North End head coach McAvoy was keen to have them involved in the senior squad, taking Leigh, Seary and Mawene to the Scottish training camp, together with young keeper Oliver Lombard.
McAvoy said: “We’ve seen some of the young lads in training and in matches.
“Noah picked up a bit of an injury at the weekend playing for the Under-19s against Middlesbrough.
“Lewis Leigh for me has done really well in the games.
“Maybe he struggled a wee bit in the Bolton game but I thought when he came on against Accrington he didn’t look out of place at all.
“I’ve been delighted with him, as I have been with the others.
“No matter what age you are, if you are good enough you are going to get a chance.”
We have gathered the best of recent Championship transfer speculation below.
9. Preston hijack trialist move from another North West EFL club
Following trialist Jamie Thomas’ appearance for PNE against Accrington Stanley on Saturday, reports claim Thomas was going to play for another North West EFL side before Preston hijacked the move. (Lancashire Evening Post) Photo: Clive Brunskill
10. Premier League clubs join race for Swansea City captain
Watford and Brighton have joined Fulham in the race to sign Swansea City captain, Matt Grimes. The midfielder only has a year left on his contract and could be available for just £1.5 million. (Football Insider) Photo: Dan Istitene