The Celtics are just over a month away from training camp but bigger questions are still floating around the construction of the roster. With September on the horizon, let’s get to the mailbag featuring questions on rookie Baylor Scheierman, Kristaps Porzingis’ health and new Sixer Guerschon Yabusele. If you have questions about the Celtics or NBA , email brobb@masslive.

com or tweet @briantrobb Hey B Robb, Let me know if you think this is overly pessimistic, but I feel like the odds are against Porzingis being healthy through a playoff run next year. Last year they limited him to under 30 min a game, avoided back to backs, threw in some extra rest days and he had 2 regular season non-contact injuries (calf strains). Then the ankle injury after being back for one game in the finals.

We remember the ankle injury as the thing that knocked him out, but nobody was even sure that his last calf strain was going to hold up through a series. Injury concern stacked on top of injury concern. So after 3 lower body injuries and another surgery wouldn’t the team be foolish to put their faith in in him being healthy for this year’s playoff run? Should Brad at least consider trading him at the deadline to bring in someone else? I know, sounds crazy given his fit on and off the court but feeling like it’s a 70% chance Celtics fans will watch the team lose the finals to OKC or Denver while Porzingis sits on the bench and 39 year old Al Horford is our only playable big.

— Steve Fair.