Training camp opens Tuesday for the Knicks, but Jason Kidd has been in Greenburgh, N.Y, along with several teammates over the past 10 days for voluntary workouts.

Kidd says that nearly all of the Knicks have attended the workouts and the veteran marveled at the intensity of the sessions.

"It's been great, guys are really competing and going all out," Kidd said last week.

Point guard Raymond Felton has been an active participant in workouts.

Felton's conditioning is considered a key for the Knicks this year.

Felton is coming off a sub-par year in Portland for the Blazers, where he reportedly entered the season out of shape.

So the Knicks are hoping that Felton can bounce back in New York.

According to multiple sources at the training facility, Felton is in solid shape and motivated for his second act in a Knicks uniform.

"He looks great," one observer said. "He looks like 2010 Ray."

'2010 Ray' is a reference to Felton's first stint in New York.

Felton put up a strong argument for an All-Star bid in 2010-11, when he averaged 17 points and nine assists for the Knicks over 54 games before being dealt to Denver in the Carmelo Anthony trade.

We'll get to see for ourselves what kind of shape Felton is in Monday when he meets the media.

BREWER REMAINS ON SCHEDULE: One player who hasn't been active in these workouts is Ronnie Brewer.

Brewer underwent arthroscopic surgery on his left knee in early September to repair a medial meniscus tear.

In an interview last week with the HITS Radio show, Brewer said he hasn't received clearance to return to any basketball-related activities.

He hasn't suffered any set-backs and remains on target to return to the floor before the Nov. 1 opener against Brooklyn.

Brewer also hopes to return in time to play in the Knicks' final two preseason games.

We should get an update on Brewer on Monday at media day.

TERRY SAYS CELTS ARE TEAM TO BEAT IN ATLANTIC: Jason Terry, appearing on the internet radio show Hard 2 Guard, said the Celtics are the team to beat in the re-vamped Atlantic Division.

"We're going to win the division," said Terry, who signed with the Celtics in the offseason, essentially to replace Ray Allen. "I'm not guaranteeing anything but I do believe we're going to win the division. (Whether) that means the Knicks are going to be 2nd, 3rd or 4th, I don't know. But I know that the Boston Celtics will be No. 1."

You can follow Ian Begley on Twitter.