Clint Frazier is back in the concussion protocol after suffering a head injury while diving for a ball for Triple-A Scranton/Wilkes-Barre on Thursday night.

“We’ll just try and get as many answers as we can for him and for us and try to help him the best we can moving forward,” Aaron Boone said before the Yankees faced the Mets on Friday night in The Bronx. “Hopefully it’s something that’s short term, but [there are] a lot of unknowns, obviously, that come with this.”

The Yankees and Frazier learned that during spring training, when the outfielder suffered a concussion after crashing into a wall attempting to make a catch. He didn’t play in a regular-season game until he joined Triple-A Tampa on April 26, taking longer than expected to get rid of the symptoms.

The 23-year-old, a possible trade chip as the July 31 non-waiver trade deadline approaches, has played 15 games for the Yankees this season, going 9-for-34 with three doubles.

No doubt the Yankees will be even more cautious this time, but Boone said it’s impossible to put a time frame on anything when it comes to head injuries.

“Hopefully we just help him get right and get better,” Boone said. “Right now, I don’t know what that means.”

It remains to be seen if Frazier’s injury impacts what the Yankees do before the trade deadline, but the pitching market likely took a hit when Detroit’s Michael Fulmer was placed on the 10-day disabled list with a strained left oblique.

The 25-year-old right-hander had been linked to the Yankees, with their rotation in need of an upgrade and the Tigers willing to deal the former Mets prospect.

Now, a deal for Fulmer becomes more difficult.

“I won’t be surprised with anything they do,’’ Boone said of the Yankees’ front office. “As I’ve said, we feel like the team we have in that room is capable of great things, whether we make a change or make a tweak or make a move here or not. That said, I know from Hal [Steinbrenner] on down to [GM Brian Cashman], they’re exhausting every option.”

The Yankees got Gary Sanchez back on Friday and could have Gleyber Torres return on Wednesday at the Rays. The second baseman, out with a strained hip, is working out at the team’s facility in Tampa and is expected to play in a rehab game Saturday, then get Sunday off before playing another game Monday.

Boone said the plan is for Torres to join them Wednesday.

Neil Walker and Tyler Wade have filled in for Torres.

Brandon Drury was called up to the Yankees before Friday’s game.

“We just have a three-man bench right now and the flexibility he gives us with [lefty Steven] Matz on the hill [Saturday], there’s a good chance he’s in the lineup,’’ Boone said. “We know it’s been somewhat of a difficult season for him, more circumstance-wise, and we still understand we have a really good player. Hopefully there’s enough opportunity for him to really contribute.”

Despite Jacoby Ellsbury still not doing any baseball activity thanks to injuries to his hip and back, Boone isn’t ready to call it a lost season.

“You hold out hope he gets back at some point,’’ Boone said. “I don’t think you close that door yet. When that is, I’m not quite sure.”

Boone said he believes Aaron Judge and Giancarlo Stanton can improve on what they did in the first half, when they combined for 48 homers.

“I think they’ve been wildly productive,’’ Boone said. “I think they’re capable of more. I’ll never put a limit on those two guys because of their talent level and how special they are.”