Paul Crane and scout Dave-Te' Thomas look at some of the biggest question marks facing three more teams as they head to training camp. Several issues for the Houston Texans from Bill O'Brien's skepticism of Jadeveon Clowney to protecting Deshaun Watson and finding him more than one reliable WR. Have the Philadelphia Eagles finally found a RB and how will they solidify the defensive side of the ball? It could be a make or break year for Tennessee Titans QB Marcus Mariota along with so many others around him. Also sleepers for each of the teams and added issues elsewhere in the NFL, including DAL.