Cunning time to follow Santa’s transport (7)
I believe the answer is:
sleight
'cunning' is the definition.
(I've seen this before)
'time to follow santa's transport' is the wordplay.
'time' becomes 't' (abbreviation).
'to follow' means one lot of letters go next to another (some letters go after or follow others).
'santa's transport' becomes 'sleigh' (I've seen this in another clue).
't' after 'sleigh' is 'SLEIGHT'.
(Other definitions for sleight that I've seen before include "distraction?" , "Artful trick" , "Handy skill" , "Hits leg (anag) - cunning" , "Trickery" .)