This is the person who is allowing you to shoot on thier land, And if presented with a problem to which you could solve then i would take them out.
Even though i don't like too, i've done this recently and shot 1 dog fox and two vixens suckled.
i don't like too do it, but when faced with it. it has to be done.
So you should do the farmer the service he so needs at this time. If you don't someone else will be willing, so to keep the farmer happy and keep the right to keep on hunting the land i would sort the problem out.....
REMEMBER word will travel of the service done or not done.........