I don't think they will fall quite so far next season. Their new signings are not that bad.
The key is to keep Powell and they seem to be doing that.
They need to replace Clarke but not as a hooker necessarily. There are other hookers that do a good job and they have a kid coming through that looks preety good. What they need to replace is the guy who makes the breaks. Clarke was breaking the line for fun but they can get a second row who does the same or a centre.
Hard to do, but they don't need to replace like for like.