Murder suspect colludes with matron for a change (7,7)

I believe the answer is:

colonel mustard

'murder suspect' is the definition.
(I've seen this before)

'colludes with matron for a change' is the wordplay.
'with' says to put letters next to each other.
'for a change' indicates anagramming the letters.
'colludes'+'matron'='colludesmatron'
'colludesmatron' is an anagram of 'COLONEL MUSTARD'.

(Another definition for colonel mustard that I've seen is " Murder suspect".)

I've seen this clue in The Times.

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