Omen bad with crew's latest arrival (8)
I believe the answer is:
newcomer
'latest arrival' is the definition.
'newcomer' can be an answer for 'arrival' (I have seen 'Fresh arrival' mean 'newcomer' so perhaps 'arrival' could also mean 'newcomer'). I'm unsure of the 'latest' bit.
'omen bad with crew's' is the wordplay.
'bad with' is an anagram indicator.
'omen' mixed up with 'crew' gives 'NEWCOMER'.
Can you help me to learn more?
(Other definitions for newcomer that I've seen before include "2 arrival" , "Late arrival" , "Recent arrival" , "Immigrant" , "Parvenu" .)