The 20-year-old Northern Ireland Under-21 international has made 18 appearances for Boro this season.
Fellow midfielder Henry Cowans, 21, has had his loan from Aston Villa extended until the end of the season after playing 18 times for Boro.
But striker Harry McKirdy has returned to Villa after the expiration of his loan and two goals in 13 games.
Stevenage midfielder Dale Gorman has signed an "improved" deal to keep him at the League Two side until 2019.