WALTHAM — The Celtics might not be among the better NBA teams in the United States these days, but the franchise continues to be a major brand beyond the borders.

As such, it will soon be announced that the club is playing a third international game outside of the league’s footprint. It was reported here in November that the Celts will play preseason games in Milan and Madrid against local teams next October, and sources now say they will play a regular-season game against Sacramento in Mexico City in late November or early December.

The Kings will be the home team in that game, meaning the Celtics still will have 41 dates at the Garden, not including the preseason and playoffs.

Mexico City and its 22,000-plus seat arena have become a regular stop for the NBA. Houston defeated Minnesota there last November, 11 months after smoke from a generator fire forced the cancellation of the Timberwolves’ game against the San Antonio Spurs.

The league has been increasing its international reach through a yearly schedule of Global Games.

The Celtics have been a regular participant, playing games in Rome and London in 2007 and Istanbul and Milan in 2012.

The Celts credited their week of training in Rome as a key in bringing together a team that had added Kevin Garnett, Ray Allen and others in the offseason and went on to win the 2007-08 NBA championship.

According to sources, the Celtics still have not decided if they will fly early to Milan and hold several days of preseason camp there or travel closer to the date of that first game.

Sully gets workout

The Celtics practiced yesterday for the first time since March 28, and while Brad Stevens was looking to tighten a few things in the club’s execution, the session was of individual importance for Jared Sullinger. The forward returned Friday after being out since the All-Star break with a stress fracture in his left foot.

“Well, he’s got to get up and down the floor, there’s no question about it,” Stevens said. “We’ll do some of that. We’ll probably get some up and down as a team. But (Monday) will be harder than (Tuesday) with regard to the physical toll. (It) will be a good day to help continue to assess where he is in coming back.

“I thought he did a good job in those 10-12 minutes he played (Saturday in Toronto), but he clearly hasn’t played that much, and that’s impactful to have to play on the road, second of a back-to-back, in that many minutes, and to play as hard as we were asking him to play. He played really hard.”

Sullinger isn’t concerned about getting back to where he was before the injury right away.

“Like I told Brad in the meeting the day before the Bucks game, I’m not looking to come back like I was before the All-Star break where I was scoring the basketball and being a go-to player,” he said. “You know, I (will) just take a lesser role to help the team win because this team has it rolling.”

Crowder rests

Jae Crowder sat out the practice to rehab his right ankle. He played through the injury Saturday.

“That is purely out of holding him out, giving him one more day to heal,” Stevens said of keeping Crowder off the court. “That’s good for other people, too, to get them a few more reps. I think the biggest thing with him is he plays so hard and throws his body all over the place. . . . I anticipate he’ll be ready on Wednesday (against the Pistons), without a doubt.”

Eyes on Young

Stevens and the Celts are keeping tabs on rookie James Young during his D-League assignment.

“Boxscores and short YouTube clips of highlights is what I’ve seen,” the coach said. “Our front office is watching him at every opportunity, and the progress is good. This is an opportunity for him to start playing in playoff-type games, too.

“I thought he’s made good strides all year, but with his ups and downs and injuries and with our kind of tweaked roster, his opportunities (with the Celtics) have been less.”