An MRI on the injured shoulder of Chicago Bears quarterback Mitchell Trubisky revealed that he has a dislocated left shoulder with a slight labrum tear, but he does not need surgery, sources told ESPN’s Adam Schefter Monday.

A source said that the QB should be back “sooner rather than later.” Trubisky will travel with the team to London for its game against the Raiders but is unlikely to play.

Trubisky injured the shoulder early in the first quarter against the Vikings on Sunday and missed the majority of his team’s 16-6 victory.

The Vikings knocked Trubisky out of the game on the Bears’ sixth offensive play when Minnesota defensive end Danielle Hunter sacked the 25-year-old quarterback for a 10-yard loss.

On the play, Trubisky’s body twisted and his left shoulder hit the ground violently as Hunter pulled him down, causing the quarterback to fumble. Minnesota’s Everson Griffen scooped up the ball, although a defensive holding penalty on Vikings safety Anthony Harris gave the ball back to Chicago.

Trubisky immediately went to the blue injury tent before being escorted to the locker room for further medical attention. He returned to the sideline with his left arm in a sling, watching a good portion of the game from there, and was in the locker room congratulating teammates after the game.

Veteran backup Chase Daniel replaced Trubisky and tossed a first-quarter touchdown pass to running back Tarik Cohen. Daniel managed Sunday’s game without any turnovers and finished 22 of 30 for 195 yards and the one touchdown as the Bears improved to 3-1.

Information from ESPN’s Jeff Dickerson was used in this report.