Dont lose sight, watch him for his move, what AC is he in? what advantage does your AC hold over his? Initially I would probably be looking for an extention. But if he seems to be rookie, or just greedy he may afford you a an easy overshoot shot. If he just avoided following your roll, and grabbed a little to keep the overshoot then it may be best to bugg out if you can. A break turn would be appropriate if he is in a energy AC..IE a pony, FW, Jug etc..
Lots of variables.