The counsellor reads about confining six (7)
I believe the answer is:
adviser
'the counsellor' is the definition.
(I've seen this before)
'reads about confining six' is the wordplay.
'about' indicates anagramming the letters.
'confining' means one lot of letters goes inside another.
'six' becomes 'VI' (Roman numerals).
'reads' anagrammed gives 'adser'.
'adser' enclosing 'vi' is 'ADVISER'.
(Other definitions for adviser that I've seen before include "ID saver (anag.)" , "Counsellor, mentor" , "Counseller" , "Guide" , "subject's specialist consultant" .)