SAN FRANCISCO >> A person with knowledge of the decision says former 49ers right tackle Anthony Davis plans to file for reinstatement after he retired in June last year following a head injury.

The person spoke to The Associated Press on condition of anonymity because no move had been completed. Davis had always left open the possibility of making a comeback after sitting out a year to get healthy, and San Francisco still has his rights.

San Francisco’s 11th overall pick in the 2010 draft out of Rutgers was affected by a concussion late in the 2014 season.

Davis started all 71 games in which he had appeared, as well as eight playoff games.

Last month, Davis responded to a question on Twitter about a return to the 49ers with, “Guaranteed.”