The most common and most likely answer to this crossword clue is the 9 letter word DISENGAGE
I've seen this crossword clue in Financial Times
D
I
S
E
N
G
A
G
E
More clues leading to the result DISENGAGE
Buddy explains!

The straight part
We know that "Free" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case free = disengage.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 DISENGAGE mean?
DISENGAGE noun- A circular movement of the blade that avoids the opponent's parry
- To release or loosen from something that binds, entangles, holds, or interlocks.