The person spoke Friday on the condition of anonymity because the agreement had not yet been announced.
San Jose traded Clowe in April to the Rangers and he had three goals and five assist over 12 games during the shortened regular season. He was limited to just two playoff games with New York because a suspected concussion. Former Rangers coach John Tortorella said Clowe was New York's version of Bruins hard-hitter forward Milan Lucic.
The 30-year-old Clowe has 104 goals and 279 points in his career. Two years ago, he had career highs with 24 goals and 62 points.