The defenders join the likes of George Taft, James Pearson, Jacob Blyth, Rob Paratore, Jamie Anton and Jak McCourt in extending their stay with the Club after helping Steve Beaglehole’s Under-21s take the Development League Two North title with a game to spare back in April.
Sesay, 19, is now in his third year with the Club, and is a quick and strong central defender who has been in impressive form alongside Taft for the Under-21s - captaining the team on a number of occasions in Conrad Logan’s absence.
Meanwhile 18-year-old Australian left back Elder has also featured for the Under-21s, who only missed out on the chance to become national champions with a 3-2 play-off defeat to Cardiff, and has been a key part of Trevor Peake’s Under-18s set-up this term.