The MLS regular season isn't due to start for another two weeks, but for a quintet of MLS teams, the start of the season has arrived. Next week the quarterfinal round of the CONCACAF Champions League begins with Toronto FC, Sporting Kansas City, the Houston Dynamo, Supporters Shield holder New York Red Bulls and reigning MLS Cup champion Atlanta United all in action.

Yet that doesn't mean teams are settled in terms of personnel. Far from it. Here's the latest from around the league.

The Nagbe mystery continues

A figurative earthquake disrupted Atlanta United's preseason preparations in Southern California when it was reported by Dirty South Soccer that midfielder Darlington Nagbe was pushing for a trade to the Columbus Crew. Nagbe's Ohio roots run deep -- he spent part of his youth in the Cleveland area and played collegiately at the University of Akron. A potential move to the Crew would also reunite him with Crew manager Caleb Porter, who managed Nagbe in college and in the pros when the two were with the Portland Timbers.

After showing up to the California portion of training camp a day later than his teammates, Nagbe didn't log any minutes with the first team during scrimmages and was later sent back to Atlanta without an explanation from the club. Nagbe is supposed to resume training with his teammates on Friday.

Darlington Nagbe's status is worryingly unclear with just two weeks until the regular season. Will he end up in Columbus? Tim Clayton/Corbis via Getty Images

Multiple sources have told ESPN FC that Nagbe's current situation has nothing to do with his relationship with new Atlanta manager Frank de Boer, but rather an unspecified issue involving upper management. Nagbe's contract runs through the 2020 season and last year paid him $620,000 in total compensation, the seventh-highest on the team; no one will say whether Nagbe's issue is contract-related.

Plenty of eyes will be on Atlanta's practices later this week to see whether Nagbe is indeed in the fold.

Toronto playing waiting game on Pozuelo

It seems like not a week goes by in which Toronto FC isn't involved in some kind of transfer drama. Earlier this offseason, it was Victor Vasquez heading to UAE club Al-Arabi. Then it was Sebastian Giovinco moving to Saudi Arabian club Al-Hilal. Now the Reds find themselves tied up over the hoped-for acquisition of KRC Genk midfielder Alejandro Pozuelo.

Genk is currently 11 points clear of second-place Club Brugge at the top of the Belgian First Division A and it wants to keep Pozuelo until the end of the season, improving its chances to secure a league title. Belgium's championship involves a playoff round as well, so simply finishing in first place during the league season won't be enough to guarantee that Genk will win the title and with it, a lucrative place in the group stage of next season's UEFA Champions League. Genk said Pozuelo verbally committed to staying until the end of the current campaign, but the player said he was pressured into doing so and now wants to leave. Pozuelo's agent is attempting to secure his release via an €8 million release clause so he can move elsewhere.

Alejandro Pozuelo reportedly wants to move from Belgium to MLS, but for now, Toronto might be frustrated in its attempts to sign the Genk midfielder. YORICK JANSENS/AFP/Getty Images

Toronto, for its part, is being patient but has its limits. Its aforementioned CONCACAF Champions League commitments begin this Tuesday against Panamanian side Independiente. At some point, if Pozuelo isn't freed up, the club will begin to look elsewhere.

"We don't want to wait very long to sign our DP," said team president Bill Manning, while declining to specify Pozuelo as the team's primary target. "We want to make sure it's the right guy. It's complicated."

The Galaxy's roster dance goes on

Toronto's pursuit of Pozuelo isn't the only thing that's complicated.

As of this writing, the LA Galaxy still have four Designated Players on their roster, meaning one of them will have to take a pay cut in order for the Galaxy to be roster compliant by March 1. Zlatan Ibrahimovic just redid his deal to make him a DP, so his contract is untouchable at the moment. That leaves either Gio dos Santos, Jonathan dos Santos or Romain Alessandrini to be the player to lose his DP status and have his salary reduced for 2019.

MLSSoccer.com's Sam Stejskal reported that the Galaxy are trying to redo Gio dos Santos' deal, after the club was reportedly given the green light by owners AEG to buy out his contract. At first glance, it seems a peculiar choice.

Based on last year's salary data, Gio dos Santos' total compensation ($6 million) is substantially higher than those of brother Jonathan ($2 million) or Alessandrini ($1.869 million). On that basis it would seem easier to restructure Alessandrini's contract given the lower dollar amount involved. But performance factors into things as well, and Gio hasn't played at anywhere near a DP level during the past two seasons. Injuries have played a part in that, but the fact remains that his production hasn't been at the level his salary demands. Alessandrini, meanwhile, has averaged double digits in goals and assists during his two years in the league. Why should he be the one to have to wait for his money?

Granted, whoever has their deal redone will get his money, but it's complicated. One league source said that when considering whether a player is a DP or not, MLS averages out the total spend of the guaranteed years, so paying Gio dos Santos $1.5 million this year and the remainder of his deal next year isn't an option, unless of course the last year isn't guaranteed. That is unlikely to happen. Stay tuned.