CHARLOTTE, N.C. -- The Carolina Panthers begin a three-day minicamp on Tuesday, their final tune-up before reporting for training camp on July 24.
Here are five things to keep an eye on:
Cam Newton -- The fourth-year quarterback and coach Ron Rivera left open the possibility last week that Newton will be cleared medically to fully participate. Don't count on it. There is no real reason for Newton to risk a setback with the left ankle that required surgery in March for just three days of practice. Experts say it typically takes four months for the ankle to be completely recovered, which would end the rehabilitation in mid-July. Newton may be feeling good enough to throw and dance -- as we've seen him at some off-the-field functions -- but as he reminded, he'll step on a rock walking to the stadium and be reminded there's still healing to be done. My guess is you'll see him out there throwing some with his new receivers, but not in full team drills. It's not worth it at this point.
Left tackle -- I easily could have said the entire offensive line here since there is a complete overhaul other than center, where Pro Bowler Ryan Kalil is set. But finding a replacement for retired left tackle Jordan Gross is the most critical since that player is responsible for protecting Newton's blind side. Byron Bell and Nate Chandler split the role during organized team activities, and this will be a rehash of what they've learned. The real battle won't start until training camp when they put the pads on. Most believe Bell, moving from starting right tackle, has the inside track on the position. He was the first to work at left tackle during OTAs. But Chandler was working out at tackle before injuries last season forced him to move to right guard, where he started the final eight regular-season games. A former defensive tackle, he has solid footwork and the size (6-4, 310) to play the position. He just doesn't have experience. Working against defensive end Greg Hardy, who led the team in sacks last season with 15, will tell a lot. If you can hold your own against Hardy, then you can hold your own against most in the NFL. It's the same trial by fire Gross got with former Panther Julius Peppers across from him.
Wide receiver pairings -- Free agents Jerricho Cotchery, Jason Avant and first-round pick Kelvin Benjamin were paired a lot in OTAs when the Panthers went to three-receiver sets. The next grouping I noticed a lot included Tiquan Underwood, Tavarres King and Brenton Bersin. Trimming the wide receivers corps to six will be the toughest of any position. Outside the top combination, the rest are trying to earn a spot and prove worthy. You'll see a lot of King, Marvin McNutt, Toney Clemons, Kealoha Pilares and Philly Brown as the Panthers try to replace their top four receivers from last season. Cotchery and Avant provide experience, and Benjamin provides a big target (6-5, 240) that will be tough to keep off the field. Underwood is the most likely to round out the top four. But one of the reasons the Panthers let all-time leading receiver Steve Smith go was to give the young receivers a chance to prove themselves that they otherwise wouldn't have with Smith taking most of the repetitions. This is their chance.
Rookies -- Four rookies have a legitimate shot to make major contributions this season, with two possibly starting. As mentioned above, you can pencil Benjamin into the top three at wide receiver. He'll especially be a big target inside the red zone. Second-round pick Kony Ealy, a defensive end out of Missouri, won't get to show how his pass-rushing abilities translate into the NFL for real until he gets in pads. He won't start, but the Panthers hope he's a regular in the rotation at end, as well as tackle. Third-round pick Trai Turner spent much of OTAs as the starting right guard with veteran Chris Scott dealing with conditioning and -- as Rivera said last week -- health issues. If he can hold his own against Carolina's big tackles, he has a chance to be a steal. The fourth rookie to make a big impression thus far is fifth-round pick Bene Benwikere, a cornerback out of San Jose State. He already may be the front-runner for the nickel spot, but his real competition won't be there until training camp when Charles Godfrey is expected to return fully from an Achilles injury that ended his season in the second game last season. Godfrey is making the transition from safety back to corner, where he started most of his college year.
Secondary -- You could just say cornerback here. The safeties appear to be set with veteran free-agent acquisitions Roman Harper and Thomas DeCoud. Finding a replacement for cornerback Captain Munnerlyn, who signed with Minnesota, and possibly upgrade on the other side where undrafted rookie Melvin White started most of last season, will be key. Free agent Antoine Cason has experience in this system from his days at San Diego, where the defensive coordinator was Rivera. But Cason couldn't make the starting lineup at Arizona last season, so he still has a lot to prove. Josh Norman has made some spectacular plays in practice, just as he did the past two seasons in practice and preseason games, but he's yet to translate that into games on a regular basis. Rookie Benwikere has impressed in OTAs at the nickel spot, so don't rule him out. But like the offensive line and other areas in question, this won't be completely ironed out until training camp when Godfrey (as mentioned above) gets into the mix. Regardless, the Panthers are ahead of last season at this point at least in terms of experience.
Bonus watch: The heat. With temperatures expected in the mid-90s and high humidity, Rivera moved practices from midday-early afternoon to 10:15 a.m.-12:15 p.m. ET. It was a smart move to avoid heat-related injuries in June. It'll be plenty hot at camp in Spartanburg, South Carolina.