Likely to happen (2,3,5)
I believe the answer is:
on the cards
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">likely to happen</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for on the cards that I've seen before include "Quite possible (colloq.)" , "A merry Christmas is" , "to have a PAYE job?" , "place for 6 19 [SEASONALMESSAGES]" , "a fair certainty" .)