King is satisfied with destiny (6)
I believe the answer is:
kismet
'destiny' is the definition.
(I know that kismet is a type of destiny)
'king is satisfied' is the wordplay.
'king' becomes 'K' (abbreviation for king in chess).
'satisfied' becomes 'met' (as in 'met the conditions of his contract').
'k'+'is'+'met'='KISMET'
'with' is the link.
(Other definitions for kismet that I've seen before include "fortune" , "Will of Allah" , "Fate - 1953 musical" , "lot in life" , "Turkish fate, destiny" .)