Dashing young man’s sort of bank? (5)

I believe the answer is:

blood

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'sort of bank?' is the definition.
'blood' can be an answer for 'sort' (thesaurus). I am unsure of the 'of bank?' bit.

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for blood that I've seen before include "Recorded and respected ancestry" , "It contains plasma and platelets" , "Circulating red liquid" , "Male siblings -- sworn friends" , "Red fluid" .)

I've seen this clue in the Evening Standard.

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