"Barry has never been late in his 22 seasons as a Major League player and I don't expect him to be late this year," Borris told MLB.com.
Giants general manager Brian Sabean told a gaggle of reporters on Wednesday that he expected the left fielder to be in attendance when all the position players report.
"I expect him to be here by reporting day," Sabean said after pitchers and catchers filtered in.
The Giants open their Cactus League schedule on March 1 against the Cubs in nearby Mesa.
Bonds goes into the season with 734 home runs, 21 behind Hank Aaron, MLB's all-time leader at 755.
Bonds has been working out and taking regular batting practice near his home in the Los Angeles area. He said recently that he is in "great shape," and that he is fully recovered from surgery on his left elbow that was performed after the close of last season and the three surgeries on his right knee that restricted him to only 14 games in 2005.
Last season, he played in 130 games, tied for the club lead with 26 homers, led the National League with 115 walks and the Major Leagues with a .454 on-base percentage.
Apparently anticipating Bonds' imminent arrival, the Giants gave him his usual locker in the far right corner of the clubhouse replete with his name plate above it. One empty stall over is his new teammate, Barry Zito, the left-handed free-agent pitcher who signed a seven-year, $126 million deal this past offseason. Zito is also expected to share the near side of the clubhouse with Bonds this season at AT&T Park.
Asked about the pairing of the two high-profile Barrys, Sabean said: "It's my understanding that [Zito] requested it."
Bonds signed his contract last month, but the deal was rejected two days later by MLB.
The dispute revolved around a personal-provisions clause the Giants added to the contract, which is in direct contradiction to language already in the new Basic Agreement signed by the Players Association and owners last year.
The issue of extra player appearances was resolved last year in collective bargaining and none, aside from those stipulated in the Basic Agreement, are allowed in an individual player's contract.
The Giants altered the clause and sent the new language to Borris for Bonds to ratify. But the deal with the new provision had remained unsigned for the past two weeks.
Despite disagreements regarding other clauses in the contract, including whether the deal would be terminated if Bonds is indicted on perjury charges stemming from an ongoing federal investigation into his alleged steroid use, the appearance provision was the only reason why MLB rejected the original contract.
Bonds and the Giants came to an agreement on all financial terms Dec. 7, but the sides haggled over contract language until Bonds traveled to San Francisco and signed the deal Jan. 29 after passing the requisite physical.