Money man disastrous to incomes (9)
I believe the answer is:
economist
'money man' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps you can see an association between them that I don't see?
'disastrous to incomes' is the wordplay.
'disastrous' indicates an anagram.
'to'+'incomes'='toincomes'
'toincomes' anagrammed gives 'ECONOMIST'.
Can you help me to learn more?
(Other definitions for economist that I've seen before include "One versed in the management of a country's material resources" , "Financial expert" , "He studies money etc" , "government adviser, possibly" , "Friedman, say" .)