Charles Lewis Haley (born January 6, 1964) is a former American football linebacker and defensive end who played in the National Football League (NFL) for the San Francisco 49ers (1986-1991, 1998-1999) and the Dallas Cowboys (1992-1996). A versatile defensive player, Haley began his career as a specialty outside linebacker, eventually progressing to pass-rusher and finally full-fledged defensive end. He is the first five-time Super Bowl champion, and is one of only two such players, the other being Tom Brady. He won two Super Bowls with the 49ers (XXIII, XXIV) and three with the Cowboys (XXVII, XXVIII, XXX); he was a starter in all five championship games.

Haley was selected by the San Francisco 49ers in the fourth round (96th overall) of the 1986 NFL Draft, after dropping because he initially was timed at 4.8 seconds in the 40-yard dash, although he was later clocked by a 49ers scout at 4.55 seconds. He played outside linebacker in a 3-4 defense, finished second behind Leslie O'Neal for rookies with 12 sacks and was voted to the NFL All-Rookie team by Pro Football Weekly and the United Press International. The following year, he played again in a designated pass rusher role, coming into the game in likely passing situations, while making 25 tackles and 6.5 sacks.  In 1988, Haley was named the starter at left outside linebacker, registering 69 tackles, 11.5 sacks and would hold that spot through the 1991 season. The next year, he tallied 57 tackles and 10.5 sacks.  In 1990, Haley had 58 tackles, 9 passes defensed, was third in the league with 16 sacks, was voted the UPI NFC Defensive Player of the Year and was a consensus All-Pro.  In 1991, Haley's relationship with the organization began to deteriorate after safety Ronnie Lott was left unprotected--eligible to sign with any team under Plan B free agency. He still recorded 53 tackles, 6 passes defensed, 2 forced fumbles and 7 sacks, tying for the team lead with Larry Roberts. While with the 49ers from 1986 to 1991, he led the team in sacks every season, and played on the Super Bowl XXIII and Super Bowl XXIV championship teams.  On August 26, 1992, Haley's volatile temperament and clashes with head coach George Seifert prompted the team to trade him to the Dallas Cowboys in exchange for a 1993 second round selection (#56-Vincent Brisby) and a 1994 third round selection (#99-Alai Kalaniuvalu).Answer this question using a quote from the following article:

did he leave the 49ers
On August 26, 1992, Haley's volatile temperament and clashes with head coach George Seifert prompted the team to trade him to the Dallas Cowboys