FabFilter

Is there a way to do this? I have an instrument that has an automated pan going left-right-left-etc and I want the delay to, well, delay only panned to the exact opposite to where the instrument is panned at (for example: if the instrument is 50% left, delay is 50% right, instrument 25% right, delay 25% left). I really want to be able to do this w/o having to make a whole different send for each instrument that I want to do this with...