Fancying that man wearing felt hose out dogging (3,2,3,5,2)
I believe the answer is:
hot on the heels of
'wearing felt hose out dogging' is the definition.
I don't know anything about this answer so I can't judge whether this works.
'fancying that man' is the wordplay.
I cannot really see how this works, but
'man' could be 'he' (he refers to a man) and 'he' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for hot on the heels of that I've seen is " behind, just".)