He foots the bill - and it hurts (4)
I believe the answer is:
ache
'it hurts' is the definition.
(I've seen this in another clue)
'he foots the bill' is the wordplay.
I cannot really understand how this works, but
'he' could be 'che' and 'che' is found in the answer.
A single letter 'a' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'and' acts as a link.
Can you help me to learn more?
(Other definitions for ache that I've seen before include "Hanker" , "yearning" , "Throb - hurt" , "Long ? pain" , "Dull prolonged pain" .)