Maybe roll ball back inspiring finish from Messi with famous Argentine supporting (7)

I believe the answer is:

brioche

I'm a little stuck... Click here to teach me more about this clue!

'maybe roll' is the definition.
'brioche' can be an answer for 'roll' (I've seen this before). I am unsure of the 'maybe' bit.

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for brioche that I've seen before include "Soft loaf, rich with butter and eggs" , "Idol" , "Type of light soft roll" , "Sweet yeast bread" , "Light sweetish roll" .)

I've seen this clue in The Guardian.

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