There’s only positive news in regard to rehabilitating Boston Bruins center David Krejci.

Offseason hip surgery was a success and Krejci said today after an informal skate at Ristuccia Arena in Wilmington, Mass., that he’s been working out in the gym for a while now and that physically he’s 100 percent.

But there’s some frustration because he’s still under orders to only go 60 or 70 percent in on-ice workouts. Last week he did some light drills on the ice a couple days and today he took some shots on rookie goaltender Tuukka Rask before going for his off-ice workout.

“I’ll be playing in October,” he said. “I would say mid-October, but it’s hard to say. I just started skating.”

Offseason tidbit: Krejci spent the bulk of his summer rehabbing, but also went home to the Czech Republic for a couple weeks and hung out with his buddies, including some camping. While in Boston, he spent a lot of time enjoying the nightlife and sampling the best cuisine in the Hub.

Position battle: Entering his third NHL season, Krejci could challenge Marc Savard for No. 1 center status when healthy. Heck, some would say he was the Bruins’ top pivot for most of last season. Krejci could also challenge to get on the top power-play unit, especially because of the chemistry he has sometimes shown with Savard in 5-on-3 situations.

Projection: Krejci, a diligent worker, will be back by at least the middle of October. And depending on his ice time should challenge for the team’s lead in scoring and make it difficult for the Bruins not to use him more on the power play. Krejci’s development will go a long way toward helping the Bruins determine if they want to re-sign Savard or maybe even trade him before he becomes a free agent.