The Paper covering the match is thrown by those United supporters? (8)

I believe the answer is:

confetti

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'the paper' is the definition.
(confetti is a kind of paper)

I don't understand the remainder of the clue.

(Other definitions for confetti that I've seen before include "Bits thrown over a newly married couple" , "Wedding paper scraps" , "Throw it at the wedding, it's in bits" , "Paper pieces festively thrown" , "Paper rained on newlyweds" .)

I've seen this clue in the Irish Times.

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