Broken bolt on cellar is open for management (12)

I believe the answer is:

controllable

'open for management' is the definition.
(that which can be controlled or managed)

'broken bolt on cellar' is the wordplay.
'broken' indicates anagramming the letters.
'bolt'+'on'+'cellar'='boltoncellar'
'boltoncellar' with letters rearranged gives 'CONTROLLABLE'.

'is' is the link.

(Another definition for controllable that I've seen is " Able to be managed".)

I've seen this clue in The Times.

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