Buccaneers coach Jon Gruden has gotten one step closer to his goal of having an entire roster made up of nothing but quarterbacks.

Former Nebraska quarterback Sam Keller, who was not selected in last weekend’s draft, is heading to Tampa today to participate in the Bucs’ rookie minicamp.

Keller will be one of two rookie quarterbacks at the minicamp, alongside Josh Johnson, whom the Bucs drafted out of San Diego in the fifth round on Sunday. Keller is most likely just a camp arm to help with passing drills, but if he shows some potential, is there any doubt that the quarterback-collecting Gruden will want him back for training camp?

If it doesn’t work out, I’ll then go to the Arena League,” Keller said.

The Bucs also have quarterbacks Jeff Garcia, Brian Griese, Luke McCown, Bruce Gradkowski, Chris Simms and Jake Plummer under contract.