Man to retry plan (5)
I believe the answer is:
'man' is the definition.
(I have seen 'A man' mean 'terry' so perhaps 'man' could also mean 'terry')
'retry plan' is the wordplay.
'plan' indicates anagramming the letters (plan can mean organise).
'retry' is an anagram of 'TERRY'.
'to' acts as a link.
(Other definitions for terry that I've seen before include "Cloth to make towels", "A man", "What could be material", "Towelling material", "Towelling fabric".)