The most common and most likely answer to this crossword clue is the 8 letter word HEADBUTT
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More clues leading to the result HEADBUTT
Buddy explains!

The straight part
We know that "French footballer's famous attacking move" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case french footballer's famous attacking move = headbutt.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 HEADBUTT mean?
HEADBUTT noun- A sharp blow delivered by driving the head into an opponent or object, generally by lowering the head and charging forward or by rapidly tilting the head backward and then forward.
- To deliver a sharp blow by driving the head into an opponent or object.