Bad steer, to incite one who may go out on a limb (4,7)
I believe the answer is:
tree surgeon
'one who may go out on a limb' is the definition.
(a person climbing out onto a tree limb)
'bad steer to incite' is the wordplay.
'bad' is an anagram indicator.
'to incite' becomes 'urgeon'.
'steer' with letters rearranged gives 'trees'.
'trees'+'urgeon'='TREE SURGEON'
(Other definitions for tree surgeon that I've seen before include "chopper for plane, perhaps" , "One treating date, perhaps" , "worker on plane?" , "branch manager?" , "One might slice cherries" .)