Harbaugh has stated several times, including two weeks ago on NFL Network's "NFL Total Access," that he'd like the 49ers to re-sign Smith. The quarterback, who was the No. 1 overall pick in the 2005 draft, struggled with injuries and inconsistency during his first six seasons with the team.
Harbaugh speculated after April's draft -- when San Francisco selected quarterback Colin Kaepernick in the second round -- that Smith would return.
"I think he's going to come back to the team," Harbaugh said April 30. "He has not signed a contract."
Harbaugh changed his strategy during an interview with The Press Democrat last week.
"I'm not answering any questions about Alex Smith," Harbaugh said. "The league has mandated we do not talk about him. The NFL has mandated that we don't talk about players who are not under contract -- who are free agents who haven't signed. We've been sent a memo saying we can't talk about it."