He foresees support before the reform (7)
I believe the answer is:
prophet
'he foresees' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'support before the reform' is the wordplay.
'support' becomes 'prop' (prop up can mean to support).
'before' means one lot of letters go next to another.
'reform' indicates an anagram (letters in a new form).
'the' is an anagram of 'het'.
'prop'+'het'='PROPHET'
Can you help me to learn more?
(Other definitions for prophet that I've seen before include "Religious leader" , "Soothsayer" , "Forecaster (sounding like 4)" , "Augur" , "One who anticipates" .)