Photo: Santiago Mejia, The Chronicle

With the A’s FanFest returning to Jack London Square after nearly two decades away, many fans had hoped that the team would take the opportunity Saturday to announce that it has determined a site for a new stadium ... perhaps at nearby Howard Terminal.

That won’t happen Saturday, although the A’s do anticipate settling on a stadium site sometime this year.

“Obviously, we are going to name a site” eventually, new A’s President Dave Kaval said this week. “But we’re still evaluating transportation options for the last three or four sites; each has pros and cons. At the end of the day, we need a location that not only will work but can achieve our long-term goal of strengthening the club and providing a fan experience around it.”

The sites are the current Coliseum location, especially in the event of a Raiders move; Laney College; Howard Terminal and another potential site near Howard Terminal.

Oakland Mayor Libby Schaaf is a major proponent of Howard Terminal, as she made clear this week during an interview at her office in between shooting segments for A’s commercials. Schaaf touted the potential views, in particular, at the waterfront site. “Howard Terminal, Howard Terminal, Howard Terminal!” she said.

For the first time in several years, A’s FanFest is free — and the event, which runs from 11 a.m. to 2 p.m. will include food trucks with free fare, as well as the traditional Q-and-A sessions with players, autograph sessions and photo opportunities.

Moving the event from the Coliseum and Oracle Arena to Jack London Square was an idea that came out of one of Kaval’s open-hours meetings with fans. “We’d been thinking about it as a longshot, then someone brought it up and was very passionate about it,” Kaval said. “So we said, ‘You know what? Let’s do it.’”

Taking FanFest on the road will cost the team hundreds of thousands of dollars more than usual, Kaval said, “but we feel it’s worth it. We wanted it to be a free event and really show our fans our appreciation.”

Overton traded to Seattle: Left-handed starter Dillon Overton, designated for assignment Wednesday to make room for utility infielder Adam Rosales, was traded to the Mariners for minor-league catcher Jason Goldstein.

Goldstein, 22, was a ninth-round selection out of Illinois last year. He hit .279 between rookie ball and short-season A ball.

“Jason is an advanced receiver, an accurate thrower and has history of controlling the zone offensively in college with sneaky power,” A’s director of player personnel Billy Owens said, noting that Goldstein also was Illinois’ team captain and graduated with honors.

Susan Slusser is a San Francisco Chronicle staff writer. Email: sslusser@sfchronicle.com Twitter: @susanslusser