Raab, maybe visiting Crete - if constituents agitated, it's not ideal (9)
I believe the answer is:
imperfect
'not ideal' is the definition.
(far from ideal)
'raab maybe visiting crete if constituents agitated' is the wordplay.
'raab maybe' becomes 'MP' (Dominic Raab is a Member of Parliament).
'visiting' is an insertion indicator.
'constituents agitated' is an anagram indicator (constituent letters anagrammed).
'crete'+'if'='creteif'
'creteif' with letters rearranged gives 'ierfect'.
'mp' inserted into 'ierfect' is 'IMPERFECT'.
'it's' is the link.
(Other definitions for imperfect that I've seen before include "Flawed, defective" , "being immature" , "seconds" , "Having faults" , "Faulty; tense" .)