Saw Peter go out with mentee (7)
I believe the answer is:
protege
'mentee' is the definition.
(I've seen this in another clue)
'saw peter go out' is the wordplay.
'peter go' can be anagrammed to 'PROTEGE'.
Though, I'm not sure how the anagram is indicated.
'with' is the link.
Can you help me to learn more?
(Other definitions for protege that I've seen before include "Male helped and protected by, say, patron" , "Person who is helped or sponsored by another" , "One guided and supported by another" , "Favoured pupil" , "Blue-eyed boy" .)