Darlington joined the Posh in 2020 after spending several seasons at Nottingham Forest.
A centre forward by nature, Darlington spent the majority of last season in their U18s setup.
He signed a two-year professional development contract at the end of the 2021/22 campaign, seeing him integrate into the U21s this season.
He will go straight in to the squad for tomorrow's clash with Spalding United.
Photo credit: Peterborough United
Keep up-to-date with our exclusive email newsletters.
Subscribe