Fells was signed to the Buccaneers' practice squad Wednesday, Rick Stroud of the Tampa Bay Times reports.
Fells cleared waivers and will join Tampa Bay's practice squad. However, Stroud reports that the 6-foot-7 tight end will likely be added to the 53-man roster ahead of Sunday's matchup with Washington. Rob Gronkowski's (back) status is uncertain, so if he isn't available, then Fells will likely play a depth role behind Cameron Brate and O.J. Howard during Week 10.