Kansas City's passing offense could be back to 2014-level blandness on Sunday. Brace Hemmelgarn USA TODAY Sports

Jeremy Maclin is looking less and less likely to play against the Steelers.

The Chiefs top receiver hasn't even practice since suffering a fourth-quarter concussion last week against the Vikings.

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Andy Reid's offense can ill-afford to lose another offensive star. It'll already be without Jamaal Charles (ACL) for the remainder of 2015.

Maclin is quarterback Alex Smith's top target (39 receptions, 531 yards, TD). If he can't go, Albert Wilson and rookie Chris Conley would headline the team's receiving corps.

(h/t NFL.com)

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