No problem, mostly, to kick out professional of high rank (5)
I believe the answer is:
noble
'of high rank' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for noble that I've seen before include "old British coin" , "Honourable or of high rank" , "Lord" , "Illustrious - old money" , "Having high moral qualities" .)