NFL linebacker Matt Adams' time in Chicago is off to a bad start -- the 26-year-old was arrested for gun possession on Thursday, TMZ Sports has learned.
We're told Adams -- who signed a 1-year deal with the Bears in April -- was questioned by cops around 6:45 PM after he was spotted near a Jeep that was reported stolen.
Adams allegedly claimed to have bought the car ... but when cops searched the vehicle, they found a loaded handgun in the center console and an extended mag in the trunk.