Redevelopment of mine secures company revenue (6)
I believe the answer is:
income
'revenue' is the definition.
(both can mean money made)
'redevelopment of mine secures company' is the wordplay.
'redevelopment of' indicates an anagram (I've seen 'redevelopment' mean this (I've seen this in other clues)).
'secures' is an insertion indicator.
'company' becomes 'co' (abbreviation).
'mine' is an anagram of 'inme'.
'inme' placed around 'co' is 'INCOME'.
(Other definitions for income that I've seen before include "See 12" , "Money from investments or for work" , "Salary" , "Money received as wages, interest etc" , "Remunerations, takings" .)