The most common and most likely answer to this crossword clue is the 9 plus 1 letter word OVERLEAF –
I've seen this crossword clue in The Daily Telegraph
O
V
E
R
L
E
A
F
Â
â
€
“
Buddy explains!

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 OVERLEAF – mean?
OVERLEAF – adverb- On the other side of a page