Farewell poker call? (3,3)
I believe the answer is:
see you
'farewell' is the definition.
(I know that farewell can be written as see you)
'poker call?' is the wordplay.
I cannot really understand how this works, but
'call?' could be 'see' (seeing is a kind of calling) and 'see' is located in the answer.
The remaining letters 'you' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
(Other definitions for see you that I've seen before include "Later we'll meet" , "Informal kind of au revoir - with visual intent" , "For so long" , "Cheers" , "Bye!" .)