LEWIS White could be the next Millwall academy player to make the breakthrough – after being on the bench for the first time on Tuesday night against Fulham.
White didn't get on, instead watching as Fulham made 15-year-old Harvey Elliott the youngest player in their history, and they also brought on 17-year-old Matt O'Riley.
Lions boss Neil Harris said it was important to show that the "pathway" at Millwall to the first team is there for young players.
Harris has also said he has yet to settle on his preferred side this season, due to injuries as well as players being out of form.
Millwall lost 3-1 to Fulham to exit the EFL Cup, stretching their run without a win to five games ahead of the visit to The Den of Sheffield United this Saturday.
After Tuesday's defeat, Harris was asked if fans could see White, 19, in action this season.
He said: "Possibly. We've got some of our good young players out on loan at the moment. We still want to show the pathway to the first team is there.
"If I'm still searching for the right formulas then the door is open for everybody. Sometimes if you're good enough you're old enough, Fulham showed that.
"I made a lot of changes to the team not to disrespect the competition and certainly not to disrespect the opponent. There was a chance for some to rest and others to stake their claim."
Image: Millwall FC