The duo have impressed Neil Woods since his arrival at the club in November, and manager Russell Slade has also seen potential in the youngsters since his arrival at Blundell Park.
Jack is a tall centre-back whose strengths are that he is both quick and aggressive.
He made his first team debut in the Lincolnshire Cup at Grantham Town in the summer.
Tom plays a holding midfielder role and a big strength of his is his ability to break up play.
He has been with the Town Academy since under-9 level and also popped up with some important goals during that time at the club.