Emmanuel Sanders has not yet signed due to injury concerns

Emmanuel Sanders has been crisscrossing the country visiting teams this week, but the former Pittsburgh Steelers wide receiver might not get the kind of contract he covets because of medical concerns, a source told ESPN.com.

Sanders has a screw in each foot, stemming from injuries he sustained in the Super Bowl following the 2010 season, and teams might be leery of signing the four-year veteran to a long-term deal.

Fantasy Impact: 

Sanders hasn't missed a game in the last two seasons, but teams are understandably concerned about the screws in his feet.

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