Slip, for example, if going round tree (7)
I believe the answer is:
fielder
'slip' is the definition.
(cricket term)
'if going round tree' is the wordplay.
'going round' says the letters should be written backwards.
'tree' becomes 'elder' (elder is a kind of tree).
'if' reversed gives 'fi'.
'fi'+'elder'='FIELDER'
'for example' acts as a link.
(Other definitions for fielder that I've seen before include "he might be in a silly position" , "One as cover, slip" , "Player" , "Cricketing slip, say?" , "one in gully, perhaps" .)