Panama outlet RCPTV reports that Chen has passed his physical and will fly to Arizona today to join the team.
According to a report Sunday morning from RCPTV Panamá, Roberto Chen passed his physical in Seattle, which was performed to address concerns about his two serious knee injuries (one in 2011, another in 2014). He is set to fly to Arizona on Sunday afternoon to join the Seattle Sounders in preseason training.
The report states that Chen is expected to sign a four-year contract with the Sounders within the next few days. Seattle's staff would presumably like to see how well his knees hold up in training before finalizing the deal, which would keep him in Seattle through the end of the decade.