At any point punching allowed for lightweight boxer? (7)
I believe the answer is:
leveret
'lightweight boxer?' is the definition.
(young hare - hares sometimes box)
'at any point punching allowed' is the wordplay.
'at any point' becomes 'ever' (have you ever...?).
'punching' means one lot of letters goes inside another (inserted letters punch or puncture others).
'allowed' becomes 'let' (to let is to allow or permit).
'ever' put into 'let' is 'LEVERET'.
'for' is the link.
(Other definitions for leveret that I've seen before include "Small hopper" , "Young animal" , "Hare under a year old" , "Little beast" , "Young three dn" .)