Fellow on leave getting fruit (5)
I believe the answer is:
mango
'fruit' is the definition.
(mango is a kind of fruit)
'fellow on leave' is the wordplay.
'fellow' becomes 'man' (I've seen this before**).
'on' means one lot of letters go next to another.
'leave' becomes 'go'.
'man'+'go'='MANGO'
'getting' acts as a link.
(Other definitions for mango that I've seen before include "Large oval tropical fruit" , "Type of fruit" , "Asian fruit" , "Fleshy tropical fruit" , "fruit-tree" .)