FILE - North Carolina coach Roy Williams looks on during a news conference at the NCAA Syracuse Regional tournament at the Charlotte Coliseum in Charlotte, N.C., in this Saturday, March 19, 2005, file photo. North Carolina announced Thursday, April 1, 2021, that Hall of Fame basketball coach Roy Williams is retiring after a 33-year career that includes three national championships. (AP Photo/David J. Phillip, File)

FILE - North Carolina head coach Roy Williams talks to the media in the post-game press conference after an NCAA college basketball game against Virginia at the Dean Smith Center in Chapel Hill, N.C., in this Saturday, Feb. 15, 2020, file photo. North Carolina announced Thursday, April 1, 2021, that Hall of Fame basketball coach Roy Williams is retiring after a 33-year career that includes three national championships. (AP Photo/Chris Seward, File)

FILE - In this March 27, 1993, file photo, then-Kansas coach Roy Williams raises his arms in victory after cutting a piece of the net after the NCAA Midwest Regional final in St. Louis. Williams' Jayhawks defeated Indiana 83-77 to advance to the Final Four in New Orleans. North Carolina announced Thursday, April 1, 2021, that Hall of Fame basketball coach Roy Williams is retiring after a 33-year career that includes three national championships. (AP Photo/Seth Perlman, File)

FILE - In this March 30, 1991, file photo, then-Kansas coach Roy Williams, left, and North Carolina coach Dean Smith talk before the start of the first NCAA national semifinal game in Indianapolis. North Carolina announced Thursday, April 1, 2021, that Hall of Fame basketball coach Roy Williams is retiring after a 33-year career that includes three national championships. (AP Photo/Bob Jordan, File)

FILE - North Carolina basketball coach Roy Williams wipes away tears after giving a speech about his seniors during UNC's annual basketball awards ceremony at the Dean E. Smith Center in Chapel Hill, N.C., in this Tuesday, April 12, 2005, file photo. North Carolina announced Thursday, April 1, 2021, that Hall of Fame basketball coach Roy Williams is retiring after a 33-year career that includes three national championships. (AP Photo/Sara D. Davis, File)

North Carolina Head Basketball Coach Roy Williams pauses while speaking with members of the media during a news conference, Thursday, April 1, 2021, in Chapel Hill, N.C. Williams is retiring after 33 seasons and 903 wins as a college basketball head coach. The Hall of Fame coach led the University of North Carolina to three NCAA championships in 18 seasons as head coach of the Tar Heels. (AP Photo/Gerry Broome)

North Carolina Head Basketball Coach Roy Williams and his wife Wanda leave the court after news conference, Thursday, April 1, 2021, in Chapel Hill, N.C. Williams is retiring after 33 seasons and 903 wins as a college basketball head coach. The Hall of Fame coach led the University of North Carolina to three NCAA championships in 18 seasons as head coach of the Tar Heels. (AP Photo/Gerry Broome)

North Carolina Head Basketball Coach Roy Williams speaks with members of the media during a news conference, Thursday, April 1, 2021, in Chapel Hill, N.C. Williams is retiring after 33 seasons and 903 wins as a college basketball head coach. The Hall of Fame coach led the University of North Carolina to three NCAA championships in 18 seasons as head coach of the Tar Heels. (AP Photo/Gerry Broome)

North Carolina Head Basketball Coach Roy Williams speaks with members of the media during a news conference, Thursday, April 1, 2021, in Chapel Hill, N.C. Williams is retiring after 33 seasons and 903 wins as a college basketball head coach. The Hall of Fame coach led the University of North Carolina to three NCAA championships in 18 seasons as head coach of the Tar Heels. (AP Photo/Gerry Broome)

FILE - North Carolina head coach Roy Williams holds part of the net after an NCAA college basketball game in the championship of the Atlantic Coast Conference tournament against Virginia in Washington, in this Saturday, March 12, 2016, file photo. North Carolina announced Thursday, April 1, 2021, that Hall of Fame basketball coach Roy Williams is retiring after a 33-year career that includes three national championships. (AP Photo/Alex Brandon, File)

North Carolina Head Basketball Coach Roy Williams, right, speaks with members of the media during a news conference, Thursday, April 1, 2021, in Chapel Hill, N.C. Williams is retiring after 33 seasons and 903 wins as a college basketball head coach. The Hall of Fame coach led the University of North Carolina to three NCAA championships in 18 seasons as head coach of the Tar Heels. (AP Photo/Gerry Broome)

North Carolina basketball player Leaky Black greets head coach Roy Williams at the Dean Smith Center on campus prior to an NCAA college basketball news conference, Thursday, April 1, 2021, in Chapel Hill, N.C. Williams announced his retirement. (Travis Long/The News & Observer via AP)

FILE - North Carolina head coach Roy Williams reacts during the second half of an NCAA college basketball game against Virginia Tech at the Atlantic Coast Conference tournament in Greensboro, N.C., in this Tuesday, March 10, 2020, file photo. North Carolina announced Thursday, April 1, 2021, that Hall of Fame basketball coach Roy Williams is retiring after a 33-year career that includes three national championships. (AP Photo/Ben McKeown, File)

FILE - In this March 7, 2020, file photo, North Carolina coach Roy Williams applauds during the second half of the team's NCAA college basketball game against Duke in Durham, N.C. North Carolina announced Thursday, April 1, 2021, that Hall of Fame basketball coach Roy Williams is retiring after a 33-year career that includes three national championships. (AP Photo/Gerry Broome, File)

FILE - North Carolina head coach Roy Williams, center, celebrates with his team after their 89-72 victory over Michigan State in the championship game at the men's NCAA Final Four college basketball tournament in Detroit, in this Tuesday, April 7, 2009, file phto. North Carolina announced Thursday, April 1, 2021, that Hall of Fame basketball coach Roy Williams is retiring after a 33-year career that includes three national championships. (AP Photo/Paul Sancya, File)

FILE - North Carolina head coach Roy Williams celebrates after his team's 89-72 victory over Michigan State in the championship game at the men's NCAA Final Four college basketball tournament in Detroit, in this Tuesday, April 7, 2009, file photo. North Carolina announced Thursday, April 1, 2021, that Hall of Fame basketball coach Roy Williams is retiring after a 33-year career that includes three national championships. (AP Photo/Paul Sancya, File)