For me, perhaps, it's a preface (5)
I believe the answer is:
proem
'a preface' is the definition.
(I've seen this in another clue)
'for me perhaps' is the wordplay.
'for' becomes 'pro' (as in being 'pro' or in favour of something).
'perhaps' indicates an anagram.
'me' is an anagram of 'em'.
'pro'+'em'='PROEM'
'it's' is the link.
(Other definitions for proem that I've seen before include "Preliminary part" , "introductory piece" , "Prelude" , "introduction" .)