Alderson, who has been commuting from New York to California to continue teaching a sports marketing class at Cal-Berkeley, maintains a residence in San Diego.
Earlier Thursday, the Mets completed what Alderson called "productive meetings" with two other internal candidates: Bob Melvin and Dave Jauss.
Backman, 51, led Class A Brooklyn to a division title this year in his first season with the team. Backman's lone Major League managerial experience lasted four days in 2004, at which point the D-backs dismissed him amid reports regarding his financial and legal troubles. The former Mets second baseman and World Series champion later managed in the independent leagues for two and a half seasons before the Mets offered him a job.
Hale, 46, served as third-base coach under manager Jerry Manuel last season. An accomplished Minor League manager in Arizona, Hale has never managed in the big leagues. The Mets plan to offer him another job in some capacity, if not manager.
Collins, 61, just completed his first season as the Mets' Minor League field coordinator. He was 444-434 in six seasons managing the Astros (1994-96) and Angels (1997-99), finishing in second place in five of those six years.
The Mets have not yet announced an interview schedule for any external candidates, though Rangers hitting coach Clint Hurdle, former Mariners manager Don Wakamatsu and Red Sox bench coach DeMarlo Hale figure to be among the interviewees. Hurdle interviewed with the Pirates on Thursday, and according to the New York Post could interview with the Mets next week.