From the video

They were doing cheat motions for Greg Dulcich. He's sprinting toward the sideline, cutting back upfield on dig patterns, like the stuff that you would typically see with Tyreek Hill. Greg Dulcich was doing that. He had some yards after the catch moment. He's an athletic receiving type.
STACKED’s take
Positive signalUsage
Mike McDaniel is using cheat motions for him similar to Tyreek Hill, with sprinting toward sideline and cutting back upfield on dig patterns; athletic receiving type with yards after catch ability.
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