More importantly, he can be a lockdown enforcer for the Cavs, focusing all of his defensive energy on stopping the Celtics at the rim and helping Cleveland set the tone on either end of the floor, just like he did in the first round against Orlando. Considering how talented the Celtics are, the Cavs will need all the help they can get, and if Allen returns early into the series, momentum could be on their side in what could become an Eastern Conference slugfest.