The most common and most likely answer to this crossword clue is the 5 letter word EXEAT
E
X
E
A
T
More clues leading to the result EXEAT
- Leave sometime, not fast
- Old girlfriend, perhaps, to dine and pass out
- Once having worry, leave
- Runner with a temperature gets leave of absence
- Formal leave of absence down under once
- Leave banker by accident on vacation
- Leave old food unfinished
- Leave to leave
- Leave river with retired volunteers
- Leave banker a tenner initially
Buddy explains!

The straight part
We know that "Leave to leave" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case leave to leave = exeat.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 EXEAT mean?
EXEAT noun- A license or permit for absence from a college or a religious house (such as a monastery).
- A permission which a bishop grants to a priest to go out of his diocese.