Henry leaves some time in the morning for liaison (5)
I believe the answer is:
amour
'morning for liaison' is the definition.
'amour' can be an answer for 'liaison' (synonyms). I'm unsure of the 'morning for' bit.
'henry leaves some time in the' is the wordplay.
'henry leaves' becomes 'amr' (I can't explain this - if you can you should give a lot more credence to this answer).
'some' says to take the centre.
'time' becomes 'hour' (unit of time).
'in the' is an insertion indicator.
The centre of 'hour' is 'ou'.
'amr' enclosing 'ou' is 'AMOUR'.
Can you help me to learn more?
(Other definitions for amour that I've seen before include "A secret love affair in France" , "Affair of the heart" , "Affaire" , "beloved" , "French romance" .)