"Miami is a great organization," he told the Miami Herald. "This is a team that shows it wants to win. They have a great coaching staff."
Knight was supposed to meet with the Packers later in the day on Monday, but called in the morning and cancelled his visit. The Dolphins had been negotiating with Knight's agent, Gary Uberstine, through most of last week.
Knight, 27, is entering his seventh season in the NFL after spending his first six with the New Orleans Saints. Knight is expected to take over for Arturo Freeman at strong safety. Knight has 29 interceptions in six seasons, all with New Orleans -- including a team-high five last season. Freeman has one interception in three seasons, and none in 2002.
Knight joins fellow University of Southern California alumnus Junior Seau as Miami's second new projected starter on defense.
Second-year pro Marques Anderson is the starter at strong safety for the Packers. He will be competing against former first-round pick Antuan Edwards in training camp. Anderson and Edwards were ineffective at times during the 2002 season.
Knight's visit with the Packers was delayed by the birth of his daughter, Samone, last week.
"There's not a harder-hitting safety in the NFL," Dolphins head coach Dave Wannstedt said. He does things you can't coach. He's serious about what he does.''
Talks between Knight and the Pittsburgh Steelers broke off prior to the NFL draft over differences is compensation.
Knight had a breakout 2001 season (six interceptions and 120 tackles), which led to him being named a Pro Bowl starter for the NFC.