Starting Vikings quarterback Sam Bradford could take his place here, but how fit will he be?
Back-up QB Case Keenum was very good against the Bucs in Week 3, but had a reality check against the Lions last week.
The big news in Minnesota is the season-ending ACL injury suffered by explosive rookie running back Dalvin Cook.
Injuries have been cruel to the Vikings over the past few years and things became much tougher now with Latavius Murray and Jerick McKinnon leading the backfield.
The Bears have finally made a QB change, benching Mike Glennon and handing rookie Mitchell Trubisky a home debut against one of the best defences in the league.
Trubisky looked solid in the preseason for the Bears and is definitely an upgrade on Glennon.
The problem for Trubisky will be his lack of downfield weapons, but you would imagine that Bears coach John Fox will adopt a run-heavy offence to ease Trubisky into the NFL.
The Bears have been good at home this season, with a win over the Steelers and a near-win over the Falcons.
The Bears with +3.5 start is the way The Wolf will play this one and is keen on the unders.
The unders is 8-3 in the last 11 meetings, while the Vikings are 3-11 ATS in their last 14 games against the Bears in Chicago.
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