OWINGS MILLS, Md. — Ravens receiver Breshad Perriman is expected to participate in training camp this summer after arthroscopic surgery on his left knee Tuesday revealed no significant damage to his ACL.

It's a rare piece of good news for Perriman, who missed all of last season with a right knee injury after being selected 26th overall out of Central Florida in the 2015 draft. That injury occurred on the first day of training camp, and he was placed on injured reserve after having surgery in October to repair a partially torn posterior cruciate ligament.

Perriman was running at full speed last week before hurting his knee during an off-season training activity session. The injury, as it turned out, was not serious.

"Many, may strong prayers were answered on that," coach John Harbaugh said after the team concluded the first session of a three-day mandatory minicamp.

Perriman will receive treatment on his knee and undergo rehabilitation in the months ahead, with the target of returning to the field in late July or August.

"He should be back at some point in time during training camp and will certainly be ready for the regular season," Harbaugh said.

Keeping in mind he projected a quick return for Perriman last year, the coach cautiously added, "Again, that's always unpredictable."

Until Perriman returns, the Ravens' most viable deep threat is newcomer Mike Wallace, who once played for the enemy in the rugged series between Baltimore and Pittsburgh.

Wallace turns 30 in August, and his numbers last year with Minnesota — 39 catches for 473 yards and two TDs — were not impressive. But he had successive 1.000-yard season with the Steelers in 2010-11, and scored 10 touchdowns just two years ago with Miami.

Clearly, he's still capable of zipping downfield and getting behind the safeties.

"There's a reason why he was one of the best wide receivers in the league a few years ago," Ravens safety Eric Weddle said. "Because he's talented and can run fast. He's committed, he's eager to prove himself."

Wallace signed with Baltimore as a free agent because he figured the Ravens' offence fits his skill set.

"I'm looking for a fresh start," Wallace said. "This team gives me a chance to do the things I like to do, the things that I'm best at. It's more of an aggressive play-calling style. That's why I chose to come here — because I felt like it gave me the best opportunity to make big plays."

The plan was for Perriman and Wallace to serve as a 1-2 deep punch. They'll have to wait a bit to play together, but for now Wallace is happy to go at it alone.

"I welcomed the challenge even before Breshad got hurt," Wallace said. "That's my guy. I envisioned us both making plays, both being a deep threat for this team. My plan doesn't change."

Wallace was a participant in most of the OTAs, and he's already made an impression on his new coach.

"He's going to be a big part of what we're doing this year," Harbaugh said.

Perriman wasn't the only missing Raven.

Linebacker Elvis Dumervil and offensive tackle Eugene Monroe were absent for vastly different reasons. Harbaugh said Dumervil had a "preventive procedure" without providing any details.

___

AP NFL online: www.pro32.ap.org and www.twitter.com/AP_NFL