Not present at Patriots' practice on Thursday, likely due to injury or rehab: LG Logan Mankins, RT Sebastian Vollmer, WR Anthony Gonzalez. Not present for reasons unknown: RG Brian Waters, LB Tracy White, TE Daniels Fells. Rookie not present (graduation): WR Jeremy Ebert. Present but rehabbing: TE Rob Gronkowski (ankle), LB Brandon Spikes (knee), WR Matthew Slater (unknown), DT Myron Pryor (shoulder), S Nate Ebner (unkown).