Penguins center Sidney Crosby has been continuing with his usual summer workout routine and is progressing well in his recovery from a concussion he suffered in early January, according to Penguins general manager Ray Shero.Crosby, who began his summer program of off-ice workouts after meeting with Dr. Michael Collins of UPMC on June 1 and has since added on-ice sessions to his training regimen, will be evaluated again about a week before training camp begins in September to determine his playing status.“I think (Sidney) has progressed really well this summer,” Shero said, who talked to Crosby over the weekend. “He’s happy with his progress. Training camp is a month away, so there’s no expectation for me that he won’t be ready or will be ready. … He’s doing his usual routine. He’ll probably be in a week before camp starts, and we’ll evaluate him then to see how he’s doing.“All in all, it’s been a good summer for him getting back home and really getting back into his workout routines on and off the ice, so we’ll see what the next month brings us for training camp and of course, Oct. 6 for the regular season.”Crosby, who turned 24 on Aug. 7, has been working with his longtime trainer, Andy O’Brien, in Halifax, Nova Scotia.“The good news is that (Crosby) continues to work out and has worked out hard this summer," Shero said. "When he went back, he had a progression planned with his trainer, Andy O’Brien, that he’s gone through. So we’ll see where we are come training camp.”Shero said that Crosby has experienced some occasional symptoms, but emphasized that those are related to how hard the Penguins captain has pushed himself – which is good news in itself – and that they are to be expected with an injury like this.“He pushed himself pretty hard this summer, which is the good news,” Shero said. “He’s never had to get to the point where he’s had to shut himself down or anything.”While Crosby is in good spirits and is making positive steps in his progress, Shero also emphasized that the team will not rush the star center in his recovery.“The thing for me and for the organization is the bigger picture with Sidney Crosby , making sure that he is 100 percent cleared and ready to play when he does come back,” Shero said. “He’s not going to be pushed to come back to practice or play.“I want to make sure a year from now, three years from now, five years from now that he’s still the best player in the league and take the appropriate steps and back him, and go from there."My only concern is his long-term health."Penguins head coach Dan Bylsma said that forward Dustin Jeffrey , who was sidelined with a knee injury on March 24, is doing "quite well" in his recovery and may be cleared to begin on-ice workouts today. Dustin Jeffrey is going to see the doctor today here in Pittsburgh to be hopefully cleared to skate," Bylsma sad. "He’s doing quite well and is hopefully progressing to the next level today."Bylsma added that defenseman Brooks Orpik , who underwent successful lower abdominal/hernia surgery on his right side on July 20, is also doing well."Orpik is recovering fine and doing well in that regard," Bylsma said.