City swoop for Stephen
Henderson will officially join on the 1st of July.
The 19 year old was deemed unwanted by villa boss O'Neil so he jumped at the chance to sign for Championship City.
Henderson will be challenging Adriano Basso and Chris Weale for the number one spot.
Henderson has already declared he has not joined to sit back on the bench and will be fully challenging for the starting spot.
Henderson is 6ft 3' and has been capped right through from Under 15 to Under 19 level for Ireland.
His family has a history of goalkeepers with his father, grand father and two of his uncles all were or still are keepers.