Are roster changes coming? Todd McLellan hints at possible shakeup

During Sunday's media availability Todd McLellan mentioned how they called Nate Danielson because they needed to see what they had in him before making decisions on other players. Does this mean someone is getting waived? Or does it mean something more significant is coming? What did we think of Danielson's debut, and what do we hope he can provide to the team? #LGRW