Reportedly hatched offspring (5)
I believe the answer is:
brood
'offspring' is the definition.
(I've seen this before)
'reportedly hatched' is the wordplay.
'reportedly' shows a homophone (sound like).
'hatched' becomes 'brewed' (e.g. a plan).
'brewed' sounds like 'BROOD'.
(Other definitions for brood that I've seen before include "Ponder - family" , "Think resentfully - about young birds?" , "Clutch" , "Meditate, fret" , "Family of young birds" .)