The Vikings are one of four teams in the mix to sign free-agent defensive back Nickell Robey-Coleman, Chris Tomasson of the Pioneer Press tweets. As Tomasson notes, he could be a replacement in the slot for Captain Munnerlyn. 
Robey-Coleman was cut by Buffalo earlier this month and that move caught some by surprise, given his proficiency in the slot. He didn’t get mainstream attention with the Bills, but he did earn a higher grade from Pro Football Focus higher than teammates Stephon Gilmore and Ronald Darby. He ranked as PFF’s No. 33 overall corner overall for his work in 573 snaps. The former USC standout also had two interceptions, one forced fumble, and a defensive touchdown.
The Vikings are also interested in defensive back Lardarius Webb.
Could Pats be interested if this situation with Butler doesn’t get better or if it gets even worse?
is green bay in on him