Possible or likely (2,3,5)
I believe the answer is:
on the cards
This clue is a double definition.
'possible' is the first definition.
(I've seen this before)
'likely' is the second definition.
(I've seen this before)
(Other definitions for on the cards that I've seen before include "Quite possible (colloq.)" , "Likely to happen" , "a fair certainty" , "A merry Christmas is" , "Quite likely" .)