The most common and most likely answer to this crossword clue is the 10 letter word FOOTBALLER
I've seen this crossword clue in Financial Times
F
O
O
T
B
A
L
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E
R
Buddy explains!
The straight part
We know that "Someone who trips over wayward boot" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case someone who trips over wayward boot = footballer.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 FOOTBALLER mean?
FOOTBALLER noun- One who plays association football.