Jackson tried to return to the game but lasted two plays and left and didn't return. Perhaps it's a good sign he tried to go, but as the story said, he's a key element to the offense because of his deep threat ability and is potentially the biggest loss of the three if the injuries are multiple weeks.
Meanwhile Jeffery missed the final three quarters of the game and it's not clear how serious his injury is. If these guys miss extended time, Hollins, Arcega-Whiteside and Agholor are next up. Agholor is a potential deep-threat fill-in for Jackson but isn't on the same level.