"We're delighted, it has taken a while, we understand that there was a degree of frustration, particularly with the fans, but it's worth waiting for," Morrison added.
"A 10-year deal gives us certainty in the club and it's a great result."
Phoenix manager Ernie Merrick credited the '#SaveTheNix' campaign that was backed by fans, and joked that it was nice to know he still has a job next season.