I guess, especially given he leaked the initial interest when we were negotiating Manning's initial contract - but there is no leverage anyway
Let's say WF owes him $3 million per year over the next 5 years. It seems like in that case we are negotiating perhaps a discounted lump sum based on:
1. time value of money (but interest rates are really low and the markets are very uncertain right now)
2. Removal of other salary offsets (as has been pointed out, those don't amount to a whole lot)
3. possibility of death (hey, we had a 56-year-old coach drop dead and that's why we are in this situation; OTOH the odds of a 53-year-old living 5 years are pretty close to 1)
4. possible changes in tax law if a D becomes President
#'s 1 and 3 are maybe worth 10% of the total face value (really, they are not a concession but the "fair" way to eliminate risk and get it done now). #2 is maybe worth another million if we think Manning immediately lands on his feet with a $175/year assistant gig. #4 is really the selling point, I guess, for making something happen with a lump sum and paying less.
In what world would anyone ever guarantee incentives that have never reached?