He's come home only this minute (6)
I believe the answer is:
justin
'he's' is the definition.
(I've seen this before)
'only this minute' is the wordplay.
'only' becomes 'just' (synonyms).
'this minute' becomes 'in' (I can't explain this - if you can you should believe this answer much more).
'just'+'in'='JUSTIN'
'come home' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for justin that I've seen before include "Boy's name" , "Boy" , "-- Timberlake, singer" .)