Looking at all of the league's upcoming unrestricted free agents for this offseason, Donte Moncrief ranks second in both target market share (17.9%) and air yard market share (30.7%).
If that's all the Jags were losing, it would already be worth taking a close look at their passing game. But they're also losing some big volume at another position, too, as T.J. Yeldon is set to vacate a 14.6% target market share -- the sixth-highest among unrestricted free agents.
Even for a team that tries to be run-heavy like the Jacksonville Jaguars, dropping 32.5% of your targets is significant.
The replacement for Moncrief's work is likely to come from within. They had a crowded wide receiver depth chart last year, and Dede Westbrook led the team in target market share (19.2%) while ranking second in air yard market share (23.3%). Keelan Cole also notched marks of 13.3% and 18.4%, respectively, and his skew towards air yards could make him more of a candidate to pick up the deep work that Moncrief vacates.
We also need to factor in D.J. Chark, though, who they drafted in the second round last year. Chark only saw 32 targets, but reduced competition could lead to an expansion of his role.
That leaves the Jaguars' wide receiver situation as a bit of a mess again. Westbrook looks like the clear favorite for fantasy purposes, having out-targeted Cole by 30 last year, but despite the extra volume available, this may be a situation to avoid, in fantasy, unless you're getting a steep discount.
The targets Yeldon leaves available may not be worth much either. As a running back, they came with almost no air yard market share (1.7%), and they're not likely to go to a wideout. If the team brings in a replacement for him (as I discussed in Wednesday's piece on backfields with the most volume available), there could be some value there.
The alternative is that Leonard Fournette may see some expanded work in the passing game, which would give his value a nice boost. There's enough uncertainty there that it's not worth putting a lot of weight into, though.
Barring the departure of another wideout or addition of a top receiving back, the vacated volume in Jacksonville doesn't come through in many actionable ways.