Before the game, coach takes transport (8)
I believe the answer is:
carjacks
'takes transport' is the definition.
(carjacking is stealing a car)
'before the game coach' is the wordplay.
'before' means one lot of letters go next to another.
'the game' becomes 'jacks' (jacks is a kind of game).
'coach' becomes 'car' (I've seen this in other clues).
'jacks' after 'car' is 'CARJACKS'.
(Other definitions for carjacks that I've seen before include "They give access to flat there" , "Commandeers estate" .)