The most common and most likely answer to this crossword clue is the 5 plus 2 plus 4 letter word MONEY TO BURN
I've seen this crossword clue in The Times
M
O
N
E
Y
T
O
B
U
R
N
More clues leading to the result MONEY TO BURN
Buddy explains!
The straight part
We know that "Reserve ready for the match?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case reserve ready for the match? = money to burn.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.