Barge over knight, and prepare to be knighted? (5)
'prepare to be knighted?' is the definition.
(I've seen this before)
'barge over knight' is the wordplay.
'barge' becomes 'keel' (both are a type of boat).
'over' indicates putting letters inside.
'knight' becomes 'n' (chess).
'keel' enclosing 'n' is 'KNEEL'.
'and' is the link.
(Other definitions for kneel that I've seen before include "Rest on hassock", "Prepare to pray?", "Go down on bended legs", "prepare for dubbing?", "Show obeisance".)