Report: Celtics engaged in contract extension talks with Tyler Zeller, Jared Sullinger

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Will they take a little less to gain some long-term security?

That has been the contract extension debate for players around the league this summer. For players such as Jonas Valanciunas and Michael Kidd-Gilchrist, the answer was yes. For Tristan Thompson, the answer is no.

Boston is having those same discussions with two guys, and both may lean toward taking the security, if the number is right — Tyler Zeller and Jared Sullinger. The sides are talking now and that will ramp up, reports the Boston Globe.

“Obviously, those are two guys that we like moving forward,” Ainge said. “So, yeah, there will be more discussions with both of them, probably during the month of October.”

Zeller, 25, appears the most likely of the three to be in line for an extension. The 7-footer averaged 10.2 points and 5.7 rebounds last season and shot a team-high 54.9 percent from the field. Zeller’s win share of 6.5 — a metric that measures the amount of victories contributed by a player — was the highest on the team.

Sullinger, who averaged 13.3 points and 5.1 rebounds in 58 games last year, is still just 23. But he already has had back and foot surgeries, and his conditioning has been a frequent issue. Sullinger has been training in Houston with former NBA player and coach John Lucas for much of the summer and has shared pictures of his apparently trimmed-down physique through social media. But his return to Boston for preseason training will be most telling.

By the three, they are also discussing Perry Jones, but he has to make the roster first (the Celtics have to cut one guaranteed contract and he could be that guy). Even if he does make it there is no extension in his future.

Zeller can take the security of a deal with the Celtics, or bet on himself and become a restricted free agent next summer when two-thirds of the league has max cap space and will be looking to hand out deals. Zeller averaged 10.2 points a game with a very efficient true shooting percentage of 59.2 percent. He had the second highest PER on the Celtics last season (behind Isaiah Thomas), and Zeller led the Celtics in win shares (6.5). He’s a guy Ainge wants to be part of the Celtics’ future. Of course, the question becomes what’s the number that makes Zeller sign? Big men get paid, would something near Kidd-Gilchrist’s $52 million be enough?

As for Sullinger, he averaged 13.3 points and 7.6 rebounds a game last season but that doesn’t mean everyone is sold on him. He has battled injuries through his career, which may make him inclined to take the security of a long-term deal. But again, it’s all about the number that works for both sides.

If I were a betting man, I’d expect there’s a better than 50/50 chance a Zeller deal gets done. Not so sure about Sullinger.