Garrett Grayson

Colorado State quarterback Garrett Grayson throws against New Mexico in the third quarter of Colorado State's 58-20 victory in an NCAA football game in Fort Collins, Colo., on Saturday, Nov. 22, 2014. (AP Photo/David Zalubowski)

(David Zalubowski)

Orchard Park, N.Y. — The Buffalo Bills are strapped for cash after a few weeks of aggressive spending in free agency, and that leaves the NFL Draft as the next step for adding talent to a roster that has already taken a big step forward this offseason.

At this point, the pro day circuit is winding down, and the Bills will have plenty of prospects coming through One Bills Drive over the next few weeks leading up to the draft on April 30. Each team is allowed 30 official visits before the NFL Draft, but Buffalo has also been tied to a long list of prospects throughout the process at the NFL Scouting Combine, all-star games and pro days.

>>Also read: Updated seven-round mock draft for Buffalo Bills

Here's a roundup of where the Bills have been and who they have visited with. This list will be updated leading up to draft night.

>>Also read: Full list of Buffalo Bills' draft picks

NFL Scouting Combine

Blake Bell, TE, Oklahoma

Bryan Bennett, QB, Southeastern Louisiana

Anthony Boone, QB, Duke

Brandon Bridge, QB, South Alabama

Shane Carden, QB, East Carolina

Cody Fajardo, QB, Nevada

Connor Halliday, QB, Washington State

Brett Hundley, QB, UCLA

David Johnson, RB, Northern Iowa

Jerry Lovelocke, QB, Prairie View A&M

Sean Mannion, QB, Oregon State

Ali Marpet, G/OT, Hobart

Nick Marshall, QB/DB Auburn

Bryce Petty, QB, Baylor

Garrett Grayson, QB, Colorado State

Blake Sims, QB, Alabama

Clive Walford, TE, Miami

All-Star Game

Aaron Ripkowski, FB, Oklahoma

B.J. Finney, C, Kansas State

Pro Days

Michigan State (Doug Whaley in attendance)

Colorado State

West Virginia

University at Buffalo

Southern Mississippi

Arizona State

East Carolina

Penn State

Nevada

Missouri

Texas

Private Workout

Garrett Grayson, QB, Colorado State

Chaz Green, OT, Florida

Carl Davis, DL, Iowa

John Miller, G, Louisville

Colleges the Bills visited in season

Alabama

Tennessee

South Florida

Oregon State

Utah State

Miami

Louisville

Florida State

Oklahoma State

