Penalty:-
A player should not be permitted to be unreasonably slow in taking any kick at goal. A period of one minute between the indication of intention to kick at goal and the actual kick is well inside the zone of "undue delay". A player who is unreasonably slow should be warned that if he persists in delay, penalties will be applied.
Even without a caution, if the delay is clearly a breach of law, the kick should be disallowed and a kick-off ordered.