Nobleman to free bananas at this point stuck in tree (4,2,3,5)
I believe the answer is:
peer of the realm
'nobleman' is the definition.
'to free bananas at this point stuck in tree' is the wordplay.
'bananas' indicates an anagram (informal term for mad).
'at this point' becomes 'here' (I've seen this before).
'stuck in' means one lot of letters goes inside another.
'tree' becomes 'palm' (palm tree is a kind of tree**).
'to'+'free'='tofree'
'tofree' with letters rearranged gives 'eeroft'.
'eeroft'+'here'='eerofthere'
'eerofthere' going into 'palm' is 'PEER OF THE REALM'.
(Other definitions for peer of the realm that I've seen before include "duke, perhaps" , "noble" , "House of Lords member" .)