The most common and most likely answer to this crossword clue is the 8 letter word RETAKING
I've seen this crossword clue in The Times
R
E
T
A
K
I
N
G
Buddy explains!

The straight part
We know that "Again catching" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case again catching = retaking.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 RETAKING mean?
RETAKING verb- To take something again
- To take something back
- To capture or occupy somewhere again
- To photograph or film again
- The act of taking again.