He has a burning desire (10)

I believe the answer is:

pyromaniac

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'he has a burning desire' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.

'he has a burning desire' is the wordplay.
'he' becomes 'c' (I can't justify this - if you can you should believe this answer much more).
'has' says to put letters next to each other.
'a burning desire' becomes 'pyromania' (desire to burn).
'c' put after 'pyromania' is 'PYROMANIAC'.

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(Other definitions for pyromaniac that I've seen before include "Fire-raiser" , "Arsonist" .)

I've seen this clue in The Globe and Mail.

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