Director of Rugby Jim Mallinder today thanked Grayson for his dedication to the club.
“Grase has been a big part of the Saints for many years and has played an important role in our development. The records he set as a player will take something special to break, and as a coach he has helped bring on some very talented individuals.
"We will use this as an opportunity to freshen things up and move things forward. On behalf of the players and coaches I wish Grase and his family all the best for the future.”
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Events are taking place in Cambridge, Norwich, Colchester, Southend and Lowestoft today, to mark Holocaust Memorial Day.
Cloud will increase through the day with rain arriving by dawn.
A mostly dry night with some clear skies allowing a touch of frost to form in places. Increasing cloud from the west tomorrow.