He took to Twitter on Monday to announce the news:
Working for the next opportunity... Appreciate the ravens for getting my feet wet... Now preparing for #49ers this weekend.. Leggo!
- Jerry Rice Jr. (@JRtherealgoatJR) May 19, 2014
The 5-foot-11, 185-pound Rice had a weekend tryout with the Baltimore Ravens, but the team declined to sign the undrafted receiver. The 49ers' minicamp is scheduled for Friday, Saturday and Sunday.
Rice caught 11 passes for 86 yards for UNLV last season, his first after four years at UCLA.
He will now try out for the team his father, the NFL's all-time leader in receptions, yards and touchdowns, helped win three Super Bowls.