According to Tom E. Curran of Comcast Sportsnet, Gronkowski is expected to play Sunday afternoon and should at least have a limited role.
Gronkowski has been practicing ever since December 14 and has been increasing the workload each and every week.
In my honest opinion, I do see Gronk playing against the Dolphins for two reasons: 1. The Patriots still have something to play for as they could possibly clinch a playoff bye with a win as well as either a Houston Texans or Denver Broncos loss. 2. Gronk needs to shake off the rust heading into the playoffs; getting some full-speed action should help ease the transition.