Possibly unite but here separate (5)
I believe the answer is:
untie
'here separate' is the definition.
'untie' can be an answer for 'separate' (I've seen this before). I'm not certain of the 'here' bit.
'possibly unite' is the wordplay.
'possibly' indicates anagramming the letters.
'unite' anagrammed gives 'UNTIE'.
'but' acts as a link.
Can you help me to learn more?
(Other definitions for untie that I've seen before include "Unite (anag)" , "Loose bonds" , "Remove ropes, unfasten" , "Undo, unfasten" , "Free from binds" .)