The Boston Celtics will enter training camp with potentially 11 new players as they've overturned their roster this offseason.

Most notably, the Celtics acquired Gordon Hayward and Kyrie Irving while losing the likes of Avery Bradley, Isaiah Thomas and Jae Crowder.

“This isn’t any sort of plan like we wanted to make a whole bunch of changes — part of it is just managing payroll and getting guys to fit on the court, just building a team,” Danny Ainge said. “It’s not about getting rid of somebody or bringing new faces in, but in the world we live in today you have a salary cap and a luxury tax and there are short contracts that are attached. When I played, I signed a six-year contract. Now, most contracts are four years [at the longest]. It’s just the nature of our business and it’s not ideal not to have continuity. But there are rewards for a freshness. What really matters is how well they play and as I said, time is our judge.”

The Celtics have been ahead of schedule in their rebuild but they felt like they needed significant changes to become true title contenders.

“I’m excited, no question, as I said, you can feel it,” Ainge said. “You can feel the energy here at our practice facility, you can see it in guys that are trying out for the [G-League], guys that are going to play major roles on our team this year, young and old, you can just see the energy that exists around here and it’s good. It’s exciting. I’m excited to get the season started and see how it all works.”