Henry leaves curses for old partners (4)
I believe the answer is:
exes
'for old partners' is the definition.
(ex-partners)
'henry leaves curses' is the wordplay.
'henry' becomes 'H' (symbol for the unit of electrical inductance).
'leaves' is a deletion indicator.
'curses' becomes 'hexes' ('hex' can be a synonym of 'curse').
'hexes' with 'h' removed is 'EXES'.
(Other definitions for exes that I've seen before include "Reduced claim from employer" , "old dates" , "Spouses once" , "Former partners" , "Expenses (abbrev.)" .)