David Forst won’t return as general manager of the Athletics, with the team announcing Friday that the two sides have “mutually agreed to part ways.” Assistant general manager Dan Feinstein will work as interim GM for the remainder of the season as the team begins searching for a permanent replacement. “His leadership, dedication, and commitment to this team have helped shape our baseball operations department and position us for the future. The move comes with the Athletics sitting near the bottom of the AL West at 45-70. Twins manager Derek Shelton wouldn’t speculate on a possible return date for Ryan, who is 6-8 with a 3.65 ERA and 138 strikeouts in 125 2/3 innings this season.