To return to the man (4)
I believe the answer is:
otto
'man' is the definition.
(I have seen 'A man' mean 'otto' so perhaps 'man' could also mean 'otto')
'to return to' is the wordplay.
'return' is a reversal indicator.
'to' reversed gives 'ot'.
'ot'+'to'='OTTO'
'the' acts as a link.
(Other definitions for otto that I've seen before include "perfume maker" , "Rose oil; man's name" , "Preminger or von Bismark?" , "German emperor" , "Palindromic German male Christian name" .)