It seems to be a very strict position to not consider a deal simply because it does not meet current criteria if there is a potential benefit identified in that unexpected opportunity. I think you would want to consider the pros and cons of stepping outside of your criteria and if that deal has enough value to make an exception. I think factors like distraction from current plan, resources occupied should all be evaluated but I think you will also want to have enough flexibility to pivot to a potential beneficial deal that arises.
