SANTA CLARA -- Vernon Davis and Alex Boone were no-shows at the start of 49ers minicamp, not unexpected.

Meanwhile, cornerback Eric Wright was missing for another reason: he decided to retire.

Wright figured to at least add depth, if not compete for a starting role, on a cornerback unit that saw Carlos Rogers and Tramaine Brock leave as free agents to the Raiders.

"Last night, Eric reached out to inform us of his plans to retire," 49ers general manager Trent Baalke said in a statement. "After a lengthy discussion, it was evident he put a great deal of thought into his decision. Eric has our full support and we wish him and his family nothing but the best."

"After seven NFL seasons, I am announcing my retirement from professional football," Wright said in the statement released by the team. "Playing was the fulfillment of a childhood dream, but as I prepared for the coming season, I realized that I no longer had the same passion I once had for the game. I will be forever grateful to all of the franchises I was lucky enough to play for, and look forward to beginning the next phase of my life, and spending more time with my family."

Meanwhile, Davis is fulfilling what he termed a "holdout" in an article he wrote for Sports Illustrated this week, looking for the 49ers to extend his contract that currently runs through 2015, as is the case with Boone.

"I'm disappointed in that decision, for them not to be here," Harbaugh said. "There's a voluntary segment to the offseason and we appreciate those guys volunteering to make the team better.

"Now it's mandatory and ... (it's) not the decision that I envision being the 49er way."

Those missing from mandatory minicamp can be fined up to $70,000.

Wright re-signed with the 49ers on March 12 for a base salary of $855,000, the minimum for a seven-year veteran. Neither Wright nor his agent could be reached for comment.

Wright, a San Francisco native, was signed last summer but spent at least a month away from the club while dealing with personal issues. He played sparingly in seven games as a reserve cornerback over the second half of last season.

"It's a little surprising," said safety Eric Reid, whose locker neighbors Wright's. "Maybe he's dealing with personal issues. I'm going to leave that up to him and not invade his space."

Wright had two drunken driving arrests before the Tampa Bay Buccaneers released him last year, after unsuccessfully attempting to trade him to the 49ers, who nullified the deal while citing a failed physical.

A league spokesman said there was "nothing to report" regarding any suspension Wright might possibly be facing.

Check back for more on this developing story.