The most common and most likely answer to this crossword clue is the 9 letter word HARVESTER
I've seen this crossword clue in The Times
H
A
R
V
E
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T
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R
Buddy explains!
The straight part
We know that "He brings in crop" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case he brings in crop = harvester.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 HARVESTER mean?
HARVESTER noun- A person who gathers the harvest.
- A machine that gathers the harvest.
- A program or algorithm that gathers data from a source.
- A North American butterfly, Feniseca tarquinius, whose larvae eat aphids and are the only entirely carnivorous caterpillars in North America
- Any butterfly of the lycaenid subfamily Miletinae to which this belongs, which are all carnivores