The Chiefs would owe Charles more than $6 million this season, a big price tag for a running back who missed most of last year to knee surgery. They would not incur a salary cap hit by letting him go and it is possible Charles could re-sign for less money.
Spiller only carried six times in stints with the Jets and Seahawks last season. The former first-round pick signed a four-year, $16 million deal with the Saints in 2015 but only played in 13 games before he was released.
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