Newcastle have appointed Harper as new goalkeeper coach with the club's Under-18 and Under-23 sides.
The former Toon stopper will be supported by Daniel García who takes over Harper's duties up to Under-16 level.
“Now, following the departure of Chris Terpcou to Arsenal, he will be playing a leading role in the development of the club's 'keepers at Under-18 and Under-23 level, while also planning, organising and monitoring the Academy's overall goalkeeping programme from the youngest age.
“Harper will be based at the Academy on a day-to-day basis and will report to the club's Head of Goalkeeping, Simon Smith.
“He will be supported by Daniel García, who has replaced Harper as Academy Goalkeeping Coach up to Under-16 level."