Losing Thomas Jones is a huge deal for the Jets, except there are a couple things to consider.
1. What did the Jets gain by cutting Jones, instead of giving him the $3 million Roster Bonus (in the uncapped year)? I cannot explain all the nuances of the uncapped NFL, but if it leads to the Jets being able to sign more FAs, then it had to be done. If they don't gain FA spending availability, then it is a bad move by the Jets, UNLESS...
2. The Jets know that he won't last. His knees wore down some at the end of the season (along with his effectiveness). If Shonn Greene didn't get injured in the AFC Championship game, that 2nd half is different, because the Jets didn't have a running game. The same thing happened 2008. The Jets may not want to take a $3 Million chance on a 31 year old running back with balky knees. Maybe they can sign LT, Westbrook, or even draft another guy late. I know what you're saying, "but the guys you listed are just as old?" Well...
3. If the Jets wanted Jones, but at a pay cut, he may have refused anyway, or bitched and moaned, causing problems in the locker room. Most people don't take to kindly to having their pay cut in half, and it kills ones ego.
Even with all that I said, Kansas City got a VERY solid back, who is a good locker room guy, who will mentor Jamal Charles. If (as jmt said) they can get an offensive line that isn't shit, then Jones will have a great year. Thomas Jones is capable of having a decent year without a good o-line (he did in 07 with the Jets), but he needs a good line in order to have a GREAT year.
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Michael Vick is remaining with the eagles. FOR NOW.
Right now, he doesn't have much value. His value should go up more by/in Training Camp, where he could be traded then (especially if there is a QB injury in camp). Vick can be successful with the Eagles though, even in the part time role he had last year. They just need to give him the football more often.