Transfer boost ;Celtics’ Sam Hauser agrees to 4-year, $45 million extension

Boston Celtics forward Sam Hauser — one of the NBA’s most accurate 3-point shooters — has agreed to a four-year, $45 million contract extension, his agent Jason Glushon told ESPN on Sunday.Hauser, who will make $2 million in the 2024-25 season, will be under contract through 2028-29 on a Celtics payroll that is set to become one of the most costly in NBA history.Undrafted out of the University of Virginia in 2021, Hauser has been a Celtics development success story and played a significant part in the franchise’s championship ascension. He shot 42.4% on 3-pointers last season, fourth best among players with 400-plus attempts, according to ESPN Stats & Information. For his career, he has shot 42.2% from 3-point range.