A concerning development emerged out of Penn State preseason camp on Saturday afternoon. Upon the arrival of Nittany Lions players at Beaver Stadium for team photo day, quarterback Tommy Stevens was spotted wearing a walking boot on his right foot.

Stevens, a redshirt junior, also carried a pair of crutches, which you can see in this photo taken by our Mark Brennan:

Stevens previously wore a walking boot on the same foot this spring. It was an undisclosed injury and he declined to provide any specifics while speaking with media at the Lift for Life Challenge on June 30.

“I was in a boot. I think that’s all I’m allowed to tell you. Lower body injury," Stevens said, adding that he didn't consider missed spring practices a completely lost opportunity.

“It made me focus more on the mental side of things, which helped,” he said. “Really, it clicked for me how fast things can change. You can be doing your stuff full speed and then all of a sudden — just like that — you’re sidelined for a while. So I’m just taking it day by day and appreciating the little things.”

UPDATE: Stevens did his best to quell the nerves of Nittany Lions fans about an hour after this story published. See the tweet below.

Don’t Panic! ???? — Tommy Stevens (@TMS_II) August 18, 2018

The Nittany Lions' No. 2 quarterback behind redshirt senior Trace McSorley, Stevens proved to be a do-it-all offensive weapon last season. He threw for 158 yards and three touchdowns, rushed for 190 yards and four scores and added two touchdown receptions.

He gained 113 yards on the ground against Maryland in the regular-season finale, totaling four touchdowns in that matchup.

Penn State offensive coordinator Ricky Rahne listed him as the only player at Penn State's newly conceived "Lion" position on the Fiesta Bowl depth chart. McSorley, during a recent appearance on the Big Ten Network, referenced Stevens' versatility and locker room clout.

“Me and Tommy have a great relationship," McSorley said. "Every single day we’re excited to come in and I get excited to see him just running on the field. We’re gonna start using him in different ways. I think it says a lot about him and his character that everyone on the team respects him for that. Everyone on the team looks at him as a leader. … You don’t usually get that out of your backup quarterback. For him to be that kind of leader for our team, to sacrifice a little bit of what he wants for the greater good of the team, and how he approaches every single day with a ton of energy and a ton of passion — and you’re right, he could be starting at just about any other place in the country — for him to take the opportunities that he does have here and be successful with them is awesome to see.”

Sean Clifford, a redshirt freshman, is expected to fill the No. 3 quarterback role this season.

“You have to prepare each week like you’re the starting quarterback,” Clifford told Lions247 earlier this month at Penn State Media Day. “No matter where you are on the depth chart — you could be last on the depth chart or first on the depth chart — it doesn’t really matter. Everyone has to be prepared for the week."

Brennan also reports from Beaver Stadium that redshirt sophomore defensive end Shane Simmons is wearing a walking boot on his left foot. The Nittany Lions lost a projected starter at the position on Wednesday when Ryan Buchholz announced his medical-related retirement.

UPDATE: Simmons also sent out a positive message on social media on Saturday night, stating he and Stevens "are fine".