Harped on with rot about king making comeback (6)

I believe the answer is:

yacked

'harped on' is the definition.
(to yack is to harp on or keep talking)

'rot about king making comeback' is the wordplay.
'rot' becomes 'decay' (I've seen this in another clue).
'about' is an insertion indicator.
'king' becomes 'K' (chess abbreviation).
'making comeback' shows that the letters should be reversed in order.
'decay' enclosing 'k' is 'dekcay'.
'dekcay' backwards is 'YACKED'.

'with' is the link.

(Another definition for yacked that I've seen is " Gossiped".)

I've seen this clue in The Guardian.

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