Can early bet inform odds backing summit? (4,5)

I believe the answer is:

mont blanc

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'summit?' is the definition.
(Mont Blanc is an example)

'can early bet inform odds backing' is the wordplay.
I cannot really understand how this works, but
an anagram of 'can' is 'anc' which is located in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for mont blanc that I've seen before include "French Alps peak" , "Highest mountain in the?Alps" , "peak form" , "European high point" , "High spot in France (and partly 18)" .)

I've seen this clue in The Sun.

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