Possibility of a companion getting the cane, maybe? (6)
I believe the answer is:
chance
'possibility' is the definition.
(chance is a kind of possibility)
'a companion getting the cane maybe?' is the wordplay.
'a companion' becomes 'ch' (I've seen this in other clues).
'getting' is a charade indicator (letters next to each other).
'maybe?' is an anagram indicator (I've seen 'maybe' mean this).
'cane' is an anagram of 'ance'.
'ch'+'ance'='CHANCE'
'of' acts as a link.
(Other definitions for chance that I've seen before include "Lady luck" , "'Fate, luck, fortune (6)'" , "Accidental - try" , "Fortune, hazard" , "Liability" .)