The Reds announced the appointment on Monday after John Yems left following a series of allegations against the manager for racial slurs and discriminatory treatment of certain players.
The move is Betsy’s first in senior management after being in charge of England’s Under-15, Under-16, Under-17 and Under-18 sides before moving to Arsenal in August 2019. ‘last year.
The former Fulham and Wycombe midfielder led the Gunners reserve side to third place in the U23 Premier League Premier League in his only season at the club.
Betsy said: “I am joining a club that has a great history that we should definitely embrace, and we are also looking forward to an exciting new start on many levels, both on and off the pitch.
“I knew I would work for bright, genuine people who share the positivity and energy needed to drive this club forward. I will work extremely hard and put my heart and soul into every day to help us succeed.
“I would also like to take this opportunity to thank Arsenal, all the staff and the players for this wonderful time at the club. The club have been first class in the way things have gone and allowed me to take this chance to progress myself with the opportunity at Crawley Town.
Arsenal Under-18 manager Dan Micciche will join Betsy at Crawley as an assistant.