Exert a pull on (7)
I believe the answer is:
attract
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">exert a pull on</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 attract that I've seen before include "'Draw, charm (7)'" , "Draw towards, being magnetic" , "Entrance" , "Draw to oneself" , "Act as a magnet" .)