An intelligent, dynamic scrum-half, Green, 21, broke into the Yorkshire Carnegie starting line-up in the 2015-16 season, earning a regular starting spot the following year. He then went on to cement his place in the England U20s squad for the 2016 Junior World Championship in Manchester, where he teamed up with future Bath teammates Jack Walker, Zach Mercer and Darren Atkins.

Green enjoyed Champions cup action in the 2018/19 season, making regular appearances in the Gallagher Premiership.