For many fans, the thinnest position heading into training camp for the Pittsburgh Steelers is at tight end. A perfect storm could be brewing because of the players who on the team’s depth chart. Starter Vance McDonald has been injury plagued throughout his career, Xavier Grimble has 22 receptions during his four-year career and one giant boneheaded play. Zach Gentry was selected in the fifth round despite a myriad of question marks that ranges from his athleticism to his dropping of passes. While the concerns about the three players listed above are valid, the other three tight ends on the roster make those concerns pale in comparison.