He has no illusions about being on a roll (7)

I believe the answer is:

realist

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'he has no illusions about' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.

'on a roll' is the wordplay.
'on' becomes 're' (regarding).
'roll' becomes 'list' (list can mean to lean or roll).
're'+'a'+'list'='REALIST'

'being' is the link.

Can you help me to learn more?

(Other definitions for realist that I've seen before include "no dreamer" , "One has no fancy ideas" , "Pragmatic person" , "Plato, for example" , "Practical sort" .)

I've seen this clue in The Globe and Mail.

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