Celtics aren't done making moves after Kyrie Irving trade

The unprecedented offseason overhaul of the Celtics roster reached a new level on Tuesday night after the Celtics officially dealt away Isaiah Thomas, Jae Crowder, Ante Zizic and the 2018 Nets first pick to the Cleveland Cavaliers for Kyrie Irving. What's next for the Celtics after the blockbuster? Let's examine where the Celtics roster is currently at after the move and what options still remain for the team to improve heading into the 2017-18 season.

Current roster/salary breakdown

Gordon Hayward: $29.7 million

Al Horford: $27.7 million

Kyrie Irving: $18.6 million

Jayson Tatum: $5.65 million

Marcus Morris: $5 million

Jaylen Brown: $4.96 million

Marcus Smart: $4.5 million

Aron Baynes: $4.3 million

Guerschon Yabusele: $2.25 million

Shane Larkin: $1.47 million

Terry Rozier: $1.99 million

Semi Ojeleye: $1.34 million

Abdel Nader: $1.17 million

Daniel Theis: $815,615

Total: $109.8 million

Analysis: Celtics add a few million dollars in salary in the deal for the upcoming season, but they are still well under the luxury tax. They will enter luxury tax territory next year when Marcus Smart comes up as a restricted free agent (along with other raises across the roster), but with Irving under contract for a very reasonable $20.1 million in 2018-19, that luxury tax bill won't hit nearly as hard as it would have if Isaiah Thomas was gunning for $25+ million per year.

Irving has a player option for 2019-20 that he will surely opt out of and that's when things will get dicey from the Celtics from a luxury tax standpoint, since he'll likely command a max deal then, which will be worth 30 percent of salary cap as a player with eight years experience after 2018-19. The Celtics will have some tough decisions to make then from a financial standpoint, but this Irving deal makes things easier for them in the next year or two. In a way, this deal is kicking the can down the road on a monster luxury tax bill.

Depth chart

Guards: Irving, Smart, Rozier, Larkin

Wings: Hayward, Brown, Nader

Swings: Morris, Tatum, Ojeleye, Yabusele, Theis

Bigs: Horford, Baynes

Analysis: The frontcourt looks pretty shallow right now without Zizic in the mix for big-man insurance. The Celtics will obviously be playing a lot of small-ball anyway with undersized 5s, but there are plenty of bigs on the open market right now that could be added (more on them later). The logjam at the wing is obviously reduced with Crowder out of the mix. Boston could certainly use another defender at the 2, otherwise there remains a lot of pressure on Jaylen Brown to step up in that role and help out Marcus Smart. Also, a lot of the non-Tatum rookies just got a lot more relevant without an overstocked roster. That obviously could change with more moves.

Projected starting five: Irving, Smart/Brown, Hayward, Horford, Morris/Baynes

Analysis: Raise your hand if you're happy you didn't write too many lineup possibilities columns for next season this week (raises hand). With Irving swapped out for Thomas and Crowder out of the fold, the options get a little simpler for the Celtics. They have a pair of choices in the backcourt with Brown and Smart to begin, while their options in the frontcourt are predicated on the style they want to play. Start small with Morris at the 4 and Horford at the 5? Or stay big with Horford at the 4 and Baynes at the 5? We'll examine each of those specific possibilities more in the coming days, but one thing is already clear: Offensively, the Celtics will be a lot of fun to watch.

What's next?

Danny Ainge left the door open about potential other moves this offseason during his conference call with the media on Tuesday night, stating that "we never know" what's coming next. So what options do the Celtics have now? Let's explore a few.

1) More trades: Everyone on the Celtics roster is eligible to be traded right now outside of the non-rookie free agents signed this offseason (Baynes, Hayward, Larkin, Theis). The needs are clear (another big, a smaller wing stopper) right now, but it's hard to envision the Celtics getting much for the remaining guys on the roster who could be dealt (Rozier, Nader, Ojeleye, Yabusele). That's young cheap labor that probably won't be moved. Brown and Tatum aren't going anywhere either.

2) Free agency: Suddenly the Celtics have an extra roster spot to play with and that could be an enticing job for a lot of available free agents on the open market. Old friends Gerald Green and Tyler Zeller are still out there, but there are some bigger intriguing names available as well. We'll cover these guys in greater depth in the days ahead, but here are few names that could fill some holes on the roster: Tony Allen, Matt Barnes, Boris Diaw, Andrew Bogut.    

There are other bigger names out there, but remember that the Celtics only have the veteran's minimum to use in free agency right now, not the mid-level exception since they are over the salary cap. They already used their cap room exception on Aron Baynes, so it's a minimum contract or bust right now. Allen is obviously an intriguing name given his defensive prowess and Boston roots, but I'll be very curious to see whether the Celtics bring in a veteran to compete for minutes or give younger players like Tatum and Brown the top crack at the wing spot. Additionally, a true big man might be the preferred choice for the C's for the 15th spot, since the team would be very thin up front if Baynes or Horford get hurt.

Either way, I expect more moves on the horizon in the coming days in what has to go down as one of the busiest summers in Celtics history.