Have to pay (3)
I believe the answer is:
owe
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">have to pay</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for owe that I've seen before include "Be indebted" , "Be obliged to pay" , "Have outstanding" , "Ben in debt" , "Have a debt to (someone)" .)