4. Offensive Line
You could argue there is competition across the line. Germain Ifedi appears locked into right tackle and Juan Castillo is talking him up. Beyond that James Daniels and Cody Whitehair are going to start. Teven Jenkins will start at left tackle as long as he is ready. If he is not ready, they will go to Elijah Wilkinson, so that role will be worth watching.
Beyond that, the question is whether or not Sam Mustipher can lock down the starting center job. He is entering year three and just last year started to get playing time. With that in mind, this is the crossroads. He either will show growth and that he learned from the moment, or he will stagnate and there will be no upside to what he brings.
This will be a defining camp for Mustipher and if he can lock down the spot it could be his for the long term.