Let’s look at the snap counts of the Dallas receiving targets over the last two games.
Against Washington, Jason Witten had 68 snaps, Dez Bryant had 57, Terrence Williams had 44, Cole Beasley 41, Brice Butler 26, Lucky Whitehead 10, Lance Dunbar 9, and Gavin Escobar 7.
Against Chicago, Witten had 68 snaps, Dez had 52, Williams 48, Beasley 30, Butler 27, Whitehead 11, Dunbar 6, Escobar 0.
If you do the math, Dallas can’t cover Bryant’s 50+ snaps with Brice Butler and Terrence Williams. Williams might bump up to take Bryant’s number, and Butler might bump up to take Williams’ snap number, but that still leaves the 26-27 snaps Butler took in the last two games to be taken by someone else.