Bears head coach Matt Eberflus said Wednesday that Mooney is in concussion protocol, Kevin Fishbain of The Athletic reports.
Mooney self-reported concussion symptoms Monday and has been in the five-step protocol ever since. The receiver appears set to miss Wednesday's practice as a result, and he could be in danger of sitting out Sunday's game against the Falcons, too. With tight end Cole Kmet (knee) also not practicing Wednesday, Chicago's pass-catching corps is suddenly looking dangerously thin behind top target DJ Moore.