The most common and most likely answer to this crossword clue is the 12 letter word CONTROLLABLE
I've seen this crossword clue in The Times
C
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More clues leading to the result CONTROLLABLE
Buddy explains!
The straight part
We know that "open for management" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case open for management = controllable.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CONTROLLABLE mean?
CONTROLLABLE noun- Any factor that can be controlled.
- Able to be controlled; subject to regulation or command.