The Hornets' youth coach David Hughes will be leaving the club to take up a full-time position with the Football Association of Wales, the Watford Observer understands.
Hughes joined the Golden Boys in September 2011 and played a part in the development of several first team players, including Tommie Hoban, Sean Murray and Luke O'Nien, to name a few.
The 36-year-old, who was hired as Wales' Under-19 manager on a part-time basis two years ago, will become the Welsh FA's assistant intermediate manager for the Under-17s to Under-21s age group.
We understand Watford have already made progress in finding his replacement.
The former Cardiff City and Aston Villa defender was the Shrews' head of youth before his switch to London Colney and has also held coaching roles at Cardiff and Barry Town.
Hughes, who holds a UEFA 'A' licence and is also qualified in sports science, is set to leave Watford next week.