The Bairns keeper is the latest in a line of goalies at The Falkirk Stadium to receive international recognition – following compatriot Michael McGovern and Irish keeper Danny Rogers before him.
The friendly fixture is scheduled for March 24 at Windsor Park – the date Falkirk and Saints switched last month’s midweek meeting to.
O’Neill said: “Conor Hazard is a goalkeeper that we have high hopes for. He trained with the senior squad last June. We have three young keepers who will be rotated and managed between the under-21s and senior side going forward.”
Hazard has youth caps for Northern Ireland from under-16s through to under-19s but has yet to appear in the under-21s.