Bulls’ new-look offense remains work in progress

Coach Billy Donovan still has no idea how the Bulls’ new-look offense will fare when the team tips off its regular season Wednesday against the Heat in Miami.

He has hopes and a solid idea, but the specifics of what certain groupings will look like on the court and how his players will embrace a more read-and-react style of play during a game that matters are unknowns.

That’s what the last few days of training camp have been about. Donovan and his staff must have a feel of what packages they are bringing to Miami when the Bulls’ charter heads out after practice Tuesday and what they still must build out as the season begins.

‘‘It’s striking that balance between [the fact that] you put so much stuff in, you’re not really good at anything and then [getting] into the season, games start coming, and you have no time to practice,’’ Donovan said. ‘‘So the things we know we’re going to have to do game-in and game-out, you’re trying to really drill down those things, get them to compete in those things.’’

For Donovan, the best news to come out of the last month was no new injuries. The Bulls already knew when they started camp last month that point guard Lonzo Ball was headed for a second surgery on his left knee in less than a year, so it gave them the entire camp to hold tryouts for the starting job.

It turns out they didn’t need that long. Former Morgan Park and Illinois standout Ayo Dosunmu staked his claim to the job by the first game of the preseason.

Dosunmu isn’t Ball, but that doesn’t mean he can’t be a poor man’s version of him. He can defend and see the floor well, and if he can knock down the corner three-pointer off drive-and-kicks from Zach LaVine and DeMar DeRozan, the Bulls just might have a solid option to hold down the fort until they know more about Ball’s recovery.

Donovan also should feel good about how his ‘‘Big Three’’ showed up to camp and played in the preseason.

While LaVine seemed to use the preseason games to build up his wind, reports out of intrasquad scrimmages were completely different. Rookie Dalen Terry still might be recovering from head-to-heads with LaVine.

DeRozan was his usual workmanlike self, averaging 21 points and 4.7 assists in just less than 25 minutes in the three preseason games he played, but it was Nikola Vucevic who really had the Bulls breathing a sigh of relief.

Vucevic shot only 31.4% from three-point range last season, his lowest percentage since the shot became a regular part of his repertoire. The fact that he was 7-for-14 from long range in the preseason is at least a sign that he might get back to normal.

If opposing defenses have to respect Vucevic from outside, that leaves more operating room for DeRozan’s midrange game and a clearer runway to the rim for LaVine.

It also might allow Donovan to go with a big lineup by playing Vucevic and Andre Drummond at the same time. That’s one of the looks that is still a work in progress heading into the season.

‘‘We have to still build out the offense,’’ Donovan said. ‘‘I think when we start to play, we’ll get to some moments where we can now start to get into some different combinations, some different areas, whether it’s playing [Vucevic] and Andre together or going small and seeing what that looks like.’’

NOTE: As expected, the Bulls made no announcement about a contract extension for guard Coby White, so he will enter next offseason as a restricted free agent.