The NFL's trade deadline is always an exciting moment for fan bases of franchises who are expected to sell and buy. Losing teams will be anxious to get at least some long-term assets to use in a throw-away season, while winning teams will be searching for help at key positions to catapult them forward.
For the Kansas City Chiefs, the need for help at running back (or anywhere on offense, really) is crystal clear, which is why they're constantly mentioned in conjunction with any potential help in the backfield. But there might be a bit of unexpected competition from a close rival.