We won't be able to afford McNair...that's why he's being kicked out of Tennessee. Furthermore, McNair is one of the most injury prone QB's in the league. It could be very possible to bring in McNair at a high figure, and lose him early...leaving us with lots of cap penalty and Cleo Lemon at the starting position anyway.
At this point, our best hope is that we sign Harrington. If we miss out on Harrington, start praying now that Collins changes his mind and decides to give it a go for another year........