According to Rick Stroud of the Tampa Bay Times, the Tampa Bay Buccaneers have signed sixth-round draft pick, cornerback Keith Tandy. While no details were made public, as with any draftee signing, the contract will be a four-year deal for close to the minimum salary. The length of the deal is mandated by the CBA, while the rookie salary cap basically dictates the size of the deal as well.
Interestingly, this is just the third draft pick the Bucs have signed so far, after signing seventh-rounders Drake Dunsmore and Michael Smith last week. With the way the Bucs are signing picks, they'll be signing linebacker Najee Goode next: they appear to be signing them in reverse order of drafting.
Given the limits imposed by the CBA and the rookie salary cap, these negotiations shouldn't really last long, and holdouts are largely pointless for rookies. You can expect every draft pick to be signed well before the preseason.