Hammersley joins Sale Sharks
The 26-year-old had signed a new two-year contract extension in January after making 103 appearances for the Falcons, but will instead be a Sale Sharks player next season.
Director of rugby Dean Richards said: “Simon joined us while he was at Durham University, and we have spent a huge amount of time and effort developing him into a quality Premiership player who went on tour with England Saxons.
“We had hoped to keep our squad together, with everyone fighting together to regain our top-flight status.
“Whilst I understand Simon’s motivation to play at the highest level it is really disappointing to lose someone of his ability, who we have invested a huge amount of time and effort into.
“Ultimately that is professional sport, and we thank Simon for his efforts and wish him all the best for the future.”
