Very good and legitimate request (7)
I believe the answer is:
solicit
'request' is the definition.
(I know that solicit is a more specific form of the action ask)
'very good and legitimate' is the wordplay.
'very good' becomes 'so' (as in the adjectival form 'just so!').
'and' says to put letters next to each other.
'legitimate' becomes 'licit' (synonyms).
'so'+'licit'='SOLICIT'
(Other definitions for solicit that I've seen before include "Try to obtain (something) from someone" , "Beg - hustle" , "Ask (someone) for something" , "Seek to obtain, ask earnestly" , "Invite, beg for" .)