The 20-year-old joined the League One club on 1 September, after appearing in our EFL Trophy game against Stockport County and scoring during the penalty shootout.
He made an instant impression by finding the net on his debut for his new team, in a 3-0 win away to Leyton Orient.
McNeill, who rejoined the Reds from Manchester City in the summer of 2020, played two further games for Stevenage and was an unused substitute on four occasions.
Steve Evans's side are doing well, and currently sit in seventh position in the table.