The erasure of the Phil Jackson era continued Friday morning as the Knicks released burly center Marshall Plumlee to open up cap space.
Plumlee was to make $1.3 million next season and the guarantee kicked in July 20, according to a source. The Knicks needed the room now.
The release came the morning after the Knicks, being run in the interim by Steve Mills, signed Tim Hardaway Jr. — a player Jackson couldn’t get rid of fast enough after one season — to a four-year, $71 million offer sheet.
Multiple sources told The Post there’s a chance Plumlee still will be invited to Knicks training camp on a non-guaranteed deal. Their two-way signing of undrafted Vanderbilt center Luke Kornet, a 3-point-shooting specialist, lessened the need for Plumlee.
But he was clearly a Jackson guy, one of the few players Jackson huddled with. Plumlee told The Post during summer league he had read many of Jackson’s books and they spent a lot of time alone together going over details of the triangle offense.
Plumlee expressed gratitude to Jackson and said he planned to call him after summer league.
“It’s a business,’’ Plumlee told The Post, referring to Jackson’s firing on June 28. “The feeling doesn’t sink in until it happens to you. Phil is someone I cherish our relationship. I felt I learned a lot from him. I felt he believed in me. I’m forever grateful for Phil Jackson. I really enjoyed playing and learning from him.”
Plumlee, who went undrafted out of Duke and also is part of the Army Reserve, averaged 1.9 points and 2.4 rebounds in eight minutes over 21 games for the Knicks last season and also played 15 games for the D-League Westchester. His NBA-playing brothers, Miles and Mason, cast a vote for him for the 2017 All-Star Game.
Plumlee, who turns 25 next week, averaged 8.5 points per game during summer league and said he cut his body fat from 12 percent to 6 percent.
“It’s the leanest 250 pounds I’ve been,’’ Plumlee said.
Plumlee was looking forward to playing in Jeff Hornacek’s faster offense. Plumlee said his role this season was to get down the court first and set screens and defend ball screens.
“I remember watching my brother Miles play for Hornacek with the Suns,’’ Plumlee said. “I loved the way they played. Any kind of fast pace, running and gunning, I want to be a part of. I think we have personnel this year to take advantage of that.’’
The 7-footer admitted to having mixed feelings on whether a full-blown triangle can work in the modern NBA of constant roster turnover.
“I’ve read some of [Jackson’s] books and he wrote his teams took a couple of years to get comfortable with the triangle offense,’’ Plumlee said. “As much as I learned, I learned how much there was to know. It’s a powerful tool, but there’s some growing pains. Just when I thought I had it figured out, Phil would come into a practice and show me 50 more things I can do with it. Wow, this thing really is special. But definitely growing pains.’’