One works as croupier and model (5)
I believe the answer is:
ideal
'model' is the definition.
(I know that ideal is a type of model)
'one works as croupier' is the wordplay.
I cannot quite understand how this works, but
'one' could be 'i' (Roman numeral) and 'i' is present in the answer.
The remaining letters 'deal' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'and' acts as a link.
Can you help me to learn more?
(Other definitions for ideal that I've seen before include "without a flaw" , "Quite perfect, can't be improved on" , "fine" , "To which one aspires" , "Model of ethical behaviour" .)