Vacancy after one replaces Head of Equities for expressing views (7)

I believe the answer is:

opining

'expressing views' is the definition.
(I've seen this in another clue)

I don't understand the rest of the clue.

(Other definitions for opining that I've seen before include "Expressing one's view" , "Thinking" .)

I've seen this clue in The Guardian.

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