Punt given to Raymond, a learner, showing disloyalty (8)
I believe the answer is:
betrayal
'disloyalty' is the definition.
(I know that betrayal is a type of subversiveness)
'punt given to raymond a learner' is the wordplay.
'punt' becomes 'bet' (punt can mean a bet).
'given to' means one lot of letters go next to another.
'raymond' becomes 'ray' (Ray is short for Raymond).
'learner' becomes 'l' (as in a learner driver with L-plates on their car).
'bet'+'ray'+'a'+'l'='BETRAYAL'
'showing' is the link.
(Other definitions for betrayal that I've seen before include "Selling" , "sale" , "Act of disloyalty" , "Treacherous act" , "Breach of trust" .)