Attendant in clubs and the bank for us (8)
I believe the answer is:
courtier
'attendant' is the definition.
(courtier is a kind of attendant)
'in clubs and the bank for us' is the wordplay.
'in' means one lot of letters goes inside another.
'clubs' becomes 'c' (abbreviation used in card games such as bridge).
'and' says to put letters next to each other.
'the bank' becomes 'tier' (I've seen this before).
'for us' becomes 'our' (I've seen this in other clues).
'c'+'tier'='ctier'
'ctier' placed around 'our' is 'COURTIER'.
(Other definitions for courtier that I've seen before include "Royal adviser" , "Sovereign's attendant" , "king's follower" , "Royal attendant" , "Attendant on monarch" .)