San Francisco 49ers

49ers notes: Guard Alex Boone says he’ll be ready for Sunday’s opener against Cowboys

Despite missing the entire offseason, Alex Boone said Tuesday he could be “very effective” if the 49ers plug him into his right guard spot Sunday against the Dallas Cowboys.

Boone worked out six days a week with friend and former NFL lineman LeCharles Bentley at Bentley’s gym in the Cleveland area during his holdout. Boone reported to the 49ers on Monday in excellent shape and passed the team’s physical.

“That’s up to the coaches,” Boone said about playing Sunday. “Personally, I think I’d be very effective. LeCharles and I did a lot of stuff while we were there. Obviously, it’s not like hitting, but we covered a lot of things. I think I’ll be prepared.”

Boone’s holdout, which officially began in June, ended Sunday when the incentives on the remaining two years of his contract were converted into base salaries. The 49ers also agreed not to give Boone the franchise tag when he becomes a free agent early in 2016.

“Both sides had to come together on something,” Boone said. “It was a win-win for everybody.”

Now the question becomes whether he can retake his starting spot in time for the Cowboys. Joe Looney has filled in at right guard during the offseason and progressed in each of his games during the preseason.

The team’s starting right tackle isn’t known, either. The regular starter, Anthony Davis, also missed the offseason after shoulder surgery in April. Jonathan Martin filled in during Davis’ absence.

If history is a guide, coach Jim Harbaugh likely will make both starting spots a mystery for as long as he can.

Osgood returns – Wide receiver Kassim Osgood, who was cut Saturday, was brought back Tuesday. Osgood filled the spot on the 53-man roster after injured nose tackle Glenn Dorsey was moved to injured reserve with a designation to return, which allows him to come back in the second half of the season.

Osgood’s return gives the 49ers seven receivers, but his main role is on special teams.

Longtime 49ers gunner C.J. Spillman, who like Osgood was released Saturday, was picked up by the Cowboys on Sunday. Spillman led the 49ers in special-teams tackles in the regular season and postseason last year.

Osgood, a 12-year veteran, likely will be one of the 49ers’ gunners. The other could be rookie safety L.J. McCray, who bumped Spillman from the 49ers’ roster.

Dorsey, who tore his biceps Aug. 1, is expected to miss another 21/2 months.

Et cetera – Safety Antoine Bethea said he no longer has symptoms from his concussion suffered Aug. 17 against Denver and will start. The veteran also has changed numbers – from 24 to 41, which he wore in Indianapolis. That number had been taken by safety Ray Ventrone, who was cut Saturday.

• Tight end Derek Carrier said he will not be slowed by the hamstring injury that prompted him to leave Thursday’s exhibition finale against Houston. Carrier, listed as the No. 3 tight end, said he took himself out of the game as a precaution.

• Other new jerseys: Rookie receiver Bruce Ellington will wear No. 10 after using No. 3 in the offseason, and McCray has gone from No. 46, which Carrier wears, to No. 31.

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