The Tampa Bay Buccaneers will sign tight end/fullback Emmanuel Ogbuehi, as first reported by Matt Vensel. Ogbuehi will sign a two-year deal, per Greg Auman. Ogbuehi participated in the veterans combine last month, which is presumably where the Bucs spotted him.
Ogbuehi was an undrafted free agent out of Georgia State two years ago, and has bounced around various offseason rosters and practice squads since then. At 6'2", 230 lbs. he's pretty small and light for a tight end, and he's likely to fit best as a move/H-back.
The team also signed center Ben Gottschalk, according to Greg Auman. Gottschalk entered the league as an undrafted rookie out of SMU last year, and was with the Chiefs during last year's offseason. At 6'5", 293 lbs. he has good size at a position of need: offensive line.
In general, though, veteran combine candidates aren't overly likely to stick around. So for now, they're just a little offseason depth.