Harris is due to make $2.5 million next season, which isn't astronomical for a starting CB. He'll get every opportunity to rehab and come back next year.
He's been a very solid corner for us, and even despite his age, was probably at least going to play out his contract with the Packers.
He's a bigger loss then Kampman imo, and it's going to put our depleted young secondary to the test for the rest of the season without him in there.