Jones (knee) exited the field during Wednesday's practice after briefly taking part in a change-of-direction drill, Eugene Frenette of the Florida Times-Union reports.
Jones tested out his injured knee while wearing a brace, but it doesn't sound like his workout went particularly well. Head coach Doug Pederson said Monday that injured reserve was a possibility for the wideout, with Jones having played in one of Jacksonville's last six games (Week 5 at Buffalo) prior to a Week 9 bye. If Jones is placed on IR before Sunday's game against the 49ers, he would be sidelined through Week 13.