Nixon announced his latest offer on Twitter.
The offer from the Golden Bears is Nixon's second, joining the one he already had from Iowa State.
As a freshman last season, Nixon totaled 36 tackles, two tackles-for-loss, four pass breakups and he led the team with five interceptions and three blocked kicks.
Nixon will graduate in December and he will have three years to play two following the 2016 football season.
Kiesean Nixon Scout Profile