Former Vikings safety Robert Blanton has signed with the Bills.

The writing was on the wall here in Minnesota after the Vikings chose to re-sign safety Andrew Sendejo then added free agent Michael Griffin.

Blanton started 13 games next to Harrison Smith in 2014. But last season, coach Mike Zimmer went with Sendejo at that strong safety spot. Blanton, a fifth-round pick in 2012, started 16 games in four seasons with the Vikings, recording 213 tackles, one interception and five pass break-ups.

Blanton is the second player whom the Vikings have "lost" in free agency. Cornerback Josh Robinson signed with the Buccaneers earlier this week.

Based on how this year's free-agency period has gone, the Vikings are again not expected to be awarded any compensatory picks next spring. They have signed four unrestricted free agents, led by guard Alex Boone, who was given a four-year, $26.8 million deal. Griffin was cut by the Titans and was a street free agent, so he doesn't count in the NFL's comp pick calculations.

With Blanton in Buffalo, three Vikings free agents remain on the market. They are linebackers Chad Greenway, Jason Trusnik and Casey Matthews. Only Greenway is expected to re-sign with the Vikings.