The most common and most likely answer to this crossword clue is the 6 plus 5 letter word CHANGE HANDS
I've seen this crossword clue in The Daily Telegraph
C
H
A
N
G
E
H
A
N
D
S
More clues leading to the result CHANGE HANDS
Buddy explains!
The straight part
We know that "Get new staff/get new owners" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case get new staff/get new owners = change hands.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.