L.J. Collier has “unusual” ankle sprain that will keep him out weeks

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Seahawks rookie defensive end L.J. Collier didn’t break anything Tuesday. That’s the good news. The bad news is the team’s first-round draft choice has an “unusual” ankle sprain that will keep him out weeks.

Coach Pete Carroll called Collier’s ankle sprain “significant,” but noted it’s neither a high-ankle nor a low-ankle issue.

“It’s not a garden-variety sprain at all,” Carroll said Thursday, via Curtis Crabtree of Sports Radio KJR and PFT. “It’s a little bit of an unusual one, upper part of his foot. It’s an unusual one for us. We really haven’t had a guy sprain his ankle just like this. . . .It’s a rare sprain.”

Collier is expected to miss the preseason, and his absence could stretch into the regular season.

“It’s going to be a little bit,” Carroll said.

The Seahawks already know they will won’t have Jarran Reed to start the season, with Reed suspended six games.

Carroll said the team could add a defensive lineman.