Socially inept mummy's boy recently seen with news boss (11)
I believe the answer is:
maladjusted
'socially inept' is the definition.
(I've seen this before)
'mummy's boy recently seen with news boss' is the wordplay.
'mummy' becomes 'ma' (both can mean a mother).
'boy' becomes 'lad' (informal term for boy).
'recently' becomes 'just' (I've seen this before).
'seen with' means one lot of letters go next to another.
'news boss' becomes 'ed' (short for editor).
'ma'+'lad'+'just'+'ed'='MALADJUSTED'
(Other definitions for maladjusted that I've seen before include "Disturbed" , "socially inept" .)