Currency to recover, most importantly? (9)
I believe the answer is:
centrally
'most importantly?' is the definition.
(of central importance)
'currency to recover' is the wordplay.
'currency' becomes 'cent' (cent is a kind of currency).
'to recover' becomes 'rally' (rallying is a kind of recovering).
'cent'+'rally'='CENTRALLY'
(Other definitions for centrally that I've seen before include "in the middle" , "Chiefly" .)