FORT MYERS, Fla. — The news that Major League Baseball Players Association executive director Tony Clark was resigning Tuesday caught the Red Sox’ clubhouse unaware.

That included team player rep Garrett Whitlock, who was informed by a team official of the news as he arrived early Tuesday morning.

“I don’t know what the reason is,” said Whitlock. “I clearly know nothing. The (union) is calling a meeting this afternoon, so hopefully I’ll get some more information then. If I said anything more, it would be all speculation. I really have no idea.

“(When I found out) I was like, ‘Wait…what?’ ”

Initially, according to reports from The Athletic and other outlets, it was thought that Clark was resigning to focus on a lawsuit being brought against the PA in which union officials are alleged to have used “licensing money or equity to improperly enrich themselves,” per The Athletic.

Later, however, ESPN reported that Clark had resigned after an internal investigation revealed he had engaged in an inappropriate relationship with his sister-in-law, who was hired by the Players Association in 2023.

Clark had served in that role since 2013. He also had a 15-year-career as a player and spent the 2002 season with the Red Sox.

The stunning news comes as negotiations between the MLBPA and owners are set to begin. The current collective bargaining agreement expires Dec. 1, at which point owners are widely expected to lock the players out, as they did when the last CBA expired.

Some owners are said to be pusing for the adoption of a salary cap, which currently governs the other North American sports (NFL, NHL, NBA). Owners say they want to address competitive balance issues within the industry, in part as a response to the spending of the two-time defending champion Los Angeles Dodgers, who this year are expected to pay more than $400 million in payroll and luxury tax penalties, or, more than five times what some small-market teams will spend this season.

The union has resisted such efforts for decades, which could lead to a long standoff next winter that could threaten an on-time start to the 2027 season.

Whitlock said he trusted the Players Association to adjust to the resignation.

“It’s such a big (operation) that I don’t foresee it a being a thing where there’s stuff Tony knows and everyone else doesn’t know,” said Whitlock. “I figure that things are going to run smoothly. I’m assuming the executive sub-committee will vote on his replacement.”

The Players Association was set to begin its annual informational tour of spring training camps Tuesday in Arizona, but a planned meeting with the Cleveland Guardians was postponed when the news about Clark hit.

Union officials are set to arrive at Fenway South sometime in March.

Whitlock said the pending negotiations and the expiration of the CBA haven’t been hot topics in the first 10 days of camp.

“I can’t speak for anyone else, but we haven’t been talking much about that,” said Whitlock. “We’re kind of focused on camp right now. We have lawyers for all that stuff, so no one’s talking about what’s going to happen and that kind of stuff. We’e focused on camp and having fun. This (news) kind of had everyone wondering, ‘Hey, what’s going on?’ ”