Mariners manager John McLaren will have an almost completely new coaching staff next season. The Mariners announced Friday night that third-base coach Carlos Garcia, pitching coach Rafael Chaves, bench coach Mike Goff and bullpen coach Jim Slaton will not return next season. Additionally, first-base coach Gary Thurman will return to the Mariners minor league staff. Thurman joined the major league club in July after McLaren was named manager and Goff became his bench coach. "Mac, with our participation, has the latitude to assemble his own coaching staff and create a fresh start with his own guys," general manager Bill Bavasi said in a statement. "This is never an easy process to go through and each of the men that will not return are great baseball people. We appreciate all their time and effort with the organization over the years."