They did not elevate Reagor, so without Parker the WRs would be: Smith-Schuster, Bourne, Douglas, and Boutte. Montgomery could play some WR and Gesicki is basically a big WR. No one with stretch the field speed. I would expect a lot of 2 TE sets.
Without Jack Jones, it looks like the starting corners will be Gonzalez and Jon Jones. Slot could be Bryant, Marcus Jones, or Mills. Seems less likely that it would be Wade or Speed.
Of their 10 OLs, 3 had no or minimal preseason time (Strange, Anderson, Onwenu), 2 are brand new to the team and have barely played (Wheatley, Lowe), and 3 are rookies (Mafi, Sow, J.Andrews). (The others are D.Andrews and Brown). The line has the potential to be a real shitshow.