In his first comments since tearing the posterior cruciate ligament in his left knee nearly two weeks ago, Bruins captain Zdeno Chara said he did not have a timetable for returning to the ice and was focused only on getting back as soon as possible. At the time of the injury, the team estimated he would miss about 4-6 weeks. There has been no indication on whether he might return earlier or later than the original estimate. “No, there’s not a timeline right now,” Chara said Tuesday at the Bruins’ gameday skate in advance of a matchup against the Florida Panthers. “I wish I could tell you guys exactly when I’m going to return, but at this point it’s just really a slow process, so who knows when that [return] day is going to be.” Chara was asked whether he was relieved to not have needed surgery on the knee. “Well, we’ll see,” he said. “It’s always nice to be able to avoid surgery, so we’ll see how it goes and it was good news.” Chara was shooting pucks against the wall in a TD Garden hallway on Tuesday just to get a feel for it again. To this point, he’s been mostly only able to work on his upper body while he’s been sidelined.