I'd be fine with the move assuming that Jenkins makes less than Bell. If he doesn't...this screams a Byrd-Jenkins repeat...trading a young, ascending player for an aging player, likely to be on the decline. It's all good as long as Bell makes more.
It's not an apples to apples comparison because Jenkins wasn't giving maximum effort with the Saints. It appeared as though he had peaked as a player. He admittedly recommitted himself to being a pro after he landed in Philly. So we brought in an All Pro in Byrd and he was never seen again. Jenkins went on to become a Pro Bowler.
The FO takes a lot of heat for letting Jenkins and Hicks walk but both guys admitted that they decided to dedicate themselves to their craft after leaving NOLA. Hard to put that on the FO.