As the Vikings concluded mini-camp Thursday, it became clearer that they plan to use Sharrif Floyd to spell Kevin Williams more than they plan to put the rookie on the field at the same time as the veteran defensive tackle.

Coach Leslie Frazier said he wants the first of the Vikings’ three first-round picks in this year’s draft to play in a rotation system with Williams, initially coming in to give the 32-year-old Williams a rest.

If Williams and Floyd emerge as the Vikings’ two best defensive tackles, Frazier said, it’s possible one could be switched to nose tackle (now manned by Letroy Guion and Fred Evans), so they can play together.

But the plan now clearly is for Floyd to play defeinsive tackle, with the rookie initially working behind Williams.

Williams is in the final year of his contract after restructuring his deal this spring, meaning Floyd could slide into a starting role in 2014 if Williams is not re-signed.

“I don’t foresee such a dropoff with Letroy or Fred for that to happen,” Frazier said of putting Floyd or Williams at nose tackle. “That would be optimal if (Floyd’s) able to get in the rotation, have success, and we can gradually add more to his plate as the season goes on.”

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