Luyambula was previously with Hungerford for a three-week spell in October.BCFC
The 19-year-old's Youth Loan runs from 17 December - 13 January 2019, with the potential to extend.
Luyambula was previously with Hungerford for a three-week spell in October.
He will link up with three other Blues youngsters that have also been loaned out to the Crusaders - attacker Tommy Anderson, fellow goalkeeper Jake Weaver and defender Josh Martin.
Meanwhile, Francis Amartey's loan to Sutton Coldfield Town is being cut short.
As part of his Youth Loan agreement, Blues were able to recall the 19-year-old forward after 28 days, which they have elected to do.