On June 26, 2024, Collier was selected with the 29th overall pick by the
Utah Jazz in the
2024 NBA Draft and on July 2, he signed with the Jazz. Throughout his rookie season, he has been
assigned several times to the
Salt Lake City Stars. On January 26, 2025, Collier was named the starting point guard in place of
Keyonte George. On February 8, Collier set a new Jazz rookie record for assists in a half, totaling 10 in the first half against the
Phoenix Suns. On February 28, Collier recorded a career-high 14 assists in a 117–116 win over the
Minnesota Timberwolves. He was named February's
Western Conference Rookie of the Month after averaging 11.5 points, 9.5 assists and 3.9 rebounds per month. On March 31, in a game against the
Charlotte Hornets, Collier surpassed
John Stockton's previous record of 415 for the most assists recorded in a season by a rookie in Jazz franchise history. On February 3, 2026, Collier recorded a career-high 22 assists in a 131–122 win over the
Indiana Pacers, the most assists in a game by a player in Jazz franchise history since John Stockton in 1992. ==Career statistics==