The Cleveland Browns yesterday released quarterback Rex Grossman, who had been brought in to assist Brian Hoyer and Johnny Manziel with team's new offense.

The Cleveland Browns yesterday released quarterback Rex Grossman, who had been brought in to assist Brian Hoyer and Johnny Manziel with team’s new offense.

The Browns also waived receiver Charles Johnson and were awarded receiver LaRon Byrd (Dallas), offensive linemen Caylin Hauptmann (Seattle) and Ryan Seymour (San Francisco) and running back Glenn Winston (San Francisco) off waivers.

Grossman, 33, signed with the Browns as a free agent on Aug.?12. He ran Browns offensive coordinator Kyle Shanahan’s system in Washington and was helping Hoyer and Manziel get more comfortable with the schemes.

49ers player arrested on domestic violence charge

Police say San Francisco 49ers defensive end Ray McDonald was arrested on domestic violence charges.

San Jose, Calif., police Sgt. Heather Randol said the 29-year-old was taken into custody early yesterday after officers responded to a home in an upscale neighborhood.

McDonald was jailed on felony domestic violence charges and was released after posting bail.

NFL commissioner Roger Goodell announced tougher penalties last week for players accused of domestic violence.

49ers general manager Trent Baalke said that the team takes “such matters” seriously but isn’t commenting on the allegations involving McDonald without more information.

Notable

Kansas City Chiefs quarterback Alex Smith agreed to a four-year, $68 million extension that includes $45 million in guaranteed money, a person familiar with the contract said. … A person with direct knowledge of the contract said holdout 49ers right guard Alex Boone, an Ohio State product, agreed to terms on a two-year, $6 million contract that replaces the two years remaining on his previous deal. … The New England Patriots traded backup quarterback Ryan Mallett to the Houston Texans. The move means second-round draft choice Jimmy Garoppolo will be the backup to Tom Brady. … Michael Sam cleared waivers, and it’s unlikely the St. Louis Rams will re-sign him to the 10-player practice squad because the defensive line is their strongest unit and they need help elsewhere.