FA: DAL signs Marquese Chriss (6'9", 7'0.25" WS) to two year deal

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Guaranteeing his deal through the year is different than guaranteeing he won't eventually be released if better options don't come to fruition. They're just keeping their options open, and the cost for that flexibility is low.

Great point.

One further note on the Mavs guaranteeing Moses, is that the Mavs didn't make a proactive move to give him a guaranteed salary for the rest of the year. They just kept him (rather than waiving him). I don't think there was anything announced, it just happened afaik. Him continuing to still be on the roster past a certain date resulted in his salary being guaranteed, and there was no choice to keep him with a non-guarantee.