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The Lions are adding an assistant coach to Jim Caldwell's shorthanded staff, according to a report.

Ryan Silverfield, a senior offensive analyst for Arizona State, will join the Lions as assistant offensive line coach, according to Sports Illustrated.

A Lions spokesman said the team had nothing to announce as of Monday evening.

The Lions fired three assistant coaches last month — offensive coordinator Joe Lombardi, offensive line coach Jeremiah Washburn and assistant offensive line coach Terry Heffernan. The team shifted some of the duties to other coaches, including quarterbacks coach Jim Bob Cooter becoming the coordinator. Silverfield will help new OL coach Ron Prince — formerly the tight ends coach — work with the line.

Silverfield spent six years as an assistant for the Minnesota Vikings before working with the offensive line at Toledo in 2014 and joining the Sun Devils staff this year.

jkatzenstein@detroitnews.com

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