At least seven teams have kept tabs on Rozier, according to Charania, who adds that the Suns had interest in Rozier prior to the firing of general manager Ryan McDonough in early October.
Rozier didn't sign a rookie-scale extension with Boston before the Oct. 15 deadline and is slated to become a restricted free agent next summer. According to the Boston Globe's Adam Himmelsbach, Rozier could be seeking starter's money in the range of $20 million a year.
Phoenix has been searching for a point guard since the offseason, with journeyman Isaiah Canaan currently starting. If they don't trade for Rozier, the Suns could theoretically sign him to an offer sheet next summer given their cap space.
Rozier has seen slightly less playing time so far this season, but that's also a function of Kyrie Irving returning from injury. The fourth-year Celtic is averaging 7.5 points on 39.4 percent 3-point shooting.