Come down and make an exchange out of love (5)
I believe the answer is:
swoop
'come down' is the definition.
(I know that come down is a is a kind of of swoop)
'exchange out of love' is the wordplay.
'exchange' becomes 'swop' (swopping is a kind of exchanging).
'out of' is an insertion indicator (some letters on the outside of others).
'love' becomes 'o' (love means zero in tennis).
'swop' placed around 'o' is 'SWOOP'.
'and make an' is the 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 swoop that I've seen before include "Police raid" , "Dive downwards" , "Descend suddenly (on)" , "Predator's dive" , "Pounce suddenly" .)