Cherries boss Sean O'Driscoll has been unable to sign players as the club were under threat of closure due to legal action from a former employee.
But with a High Court ruling last week lifting that threat, the club have been able to concentrate on the playing squat at Dean Court.
O'Driscoll said: "Josh is a good athlete and will be a very useful addition.
"We are very pleased he has agreed terms, and we are sure he will fit in very well with the rest of the squad."