Crossword Genius

Doctor can upset agreement (9)

Ross

I believe the answer is:

concordat

'agreement' is the definition.
(concordat is a kind of agreement)

'doctor can upset' is the wordplay.
'upset' indicates anagramming the letters.
'doctor'+'can'='doctorcan'
'doctorcan' anagrammed gives 'CONCORDAT'.

(Other definitions for concordat that I've seen before include "Agreement with Rome" , "Signed agreement" , "pact" , "papal blessing" .)

I've seen this clue in The Times.
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