From the video

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Marv at this point is basically just a sacrificial x- wide receiver. All he's doing is running clear out routes... Marv does not look good out there. Really doesn't look like he wants to be getting the football.
Mentioned at 10:19 – 11:27Captured by STACKED 9 hr after posting

STACKED’s take

Positive signalRole

Sacrificial role running clear-outs; doesn't look engaged

Functioning as a sacrificial X-wide receiver running clear out routes to get things open underneath for Michael Wilson and McBride. The source notes Marvin does not look good out there and really doesn't look like he wants to be getting the football. The team is hyperfocusing on Wilson and McBride instead, limiting Marvin's target upside.

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