The most common and most likely answer to this crossword clue is the 10 letter word DISBURDENS
I've seen this crossword clue in The Guardian
D
I
S
B
U
R
D
E
N
S
Buddy explains!

The straight part
We know that "Frees" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case frees = disburdens.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 DISBURDENS mean?
DISBURDENS verb- To rid of a burden; to free from a load carried; to unload.
- To free from a source of mental trouble.