Reportedly one departing for bar (5)
I believe the answer is:
lever
'bar' is the definition.
(lever is a kind of bar)
'reportedly one departing' is the wordplay.
'reportedly' shows a homophone (sound like).
'one departing' becomes 'leaver' (someone leaving).
'leaver' is a homophone of 'LEVER'.
'for' is the link.
(Other definitions for lever that I've seen before include "Revel in lifting bar" , "Bar turning on a fulcrum" , "Purchase from bar" , "Bar operating machinery" , "Jemmy" .)