Weenieworld has a blurb about Rudolph inheriting the Gronk role if Gronk does indeed retire. They also have Cameron Brate and the talented rookie Cade Otton, so the TE position is in solid hands in Tampa:
The Tampa Bay Times' Rick Stroud believes Kyle Rudolph will "inherit the bulk" of Rob Gronkowski's role in the Bucs offense.
Gronk is retired for now, with some in the Bucs organization believing he's not done with football. The team last week signed Rudolph, 32, coming off an uninspiring season with the Giants in which he caught 26 of his 39 targets for 257 yards and a touchdown. Gronkowski's retirement vacated 90 targets in the Tampa offense, and while Rudolph seeing all those looks is highly unlikely, he could be a passable streaming option in favorable matchups this season. Stroud said Cameron Brate's targets would "greatly increase" in Gronk's absence. Brate was second on the team in targets inside the ten yard line in 2021.