Of no special importance (7,4,3,5)
I believe the answer is:
neither here nor there
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">of no special importance</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 neither here nor there that I've seen before include "Where we find the Scarlet Pimpernel" , "Not relevant" , "That's of no consequence" , "So somewhere between" , "In transit" .)