Present to give back (6)
I believe the answer is:
render
I believe this clue is a double definition.
'present' is the first definition.
(rendering is a kind of presenting)
'give back' is the second definition.
('render' can be a synonym of 'give back')
'to' acts as a link.
(Other definitions for render that I've seen before include "Depict artistically" , "initial cover" , "Submit - face the wall" , "Deliver" , "Melt fat or perform song" .)