Charlie has branch to shin up (5)
I believe the answer is:
climb
'shin up' is the definition.
(thesaurus)
'charlie has branch' is the wordplay.
'charlie' becomes 'C' (phonetic alphabet).
'has' is a charade indicator (letters next to each other).
'branch' becomes 'limb' (I've seen this before).
'c'+'limb'='CLIMB'
'to' is the link.
(Other definitions for climb that I've seen before include "Go upwards" , "Go higher up" , "Ascend, scale" , "Deadened" , "Ascend, escalate" .)