The Jets have signed/re-signed defensive tackle Mike Pennel to a one-year deal, according to agent Andy Simms (on Twitter). The Jets claimed Pennel off waivers in February. 
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Pennel comes with some unfortunate baggage. In 2016, he served a pair of four-game suspensions for substance abuse. The second ban was supposed to be for ten games, but Pennel fought with the NFL and NFLPA to ultimately get the second suspension chopped down.
Between suspensions, Pennel appeared in eight games, played in 103 defensive snaps and totaled seven tackles. In his best year, 2015, he established career highs in games (16), starts (five), tackles (24) and sacks (one).
The Jets are short on talent, so they are willing to roll the dice on Pennel, despite his past transgressions.