Allen (undisclosed) was activated off the Dolphins' PUP list Wednesday, Alain Poupart of the team's official site reports.
The 29-year-old adds experience and strong blocking ability to the Dolphins' tight-end mix, but after combining for just 13 catches over the last two seasons with the Patriots, the free-agent addition needs to prove his fantasy utility within his new team context. It's worth noting that during Allen's stint with the Colts -- the team that drafted him in 2012 -- he recorded eight touchdowns in 2014 and six in 2016. Those numbers suggest that the 6-foot-4, 260-pounder could produce some in the red zone if given such opportunities by Miami.