Hearing rumours about son returning (7)
I believe the answer is:
session
'hearing' is the definition.
(I've seen this before)
'rumours about son returning' is the wordplay.
I cannot really understand how this works, but
'about' could be 'on' (as in a book 'on' a certain topic) and 'on' is found in the answer.
'son' could be 'ss' (I've seen this in other clues) and 'ss' is present in the answer.
The remaining letters 'sei' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for session that I've seen before include "Official sitting" , "Meeting of a court or parliament" , "Period during which a group meets" , "Meeting devoted to a particular purpose" , "Hearing, sitting" .)