Blind faith, mostly. 15th was based on those signings being at the same level we currently appear to be aiming for. If we spend a bit more, on established quality, then we could finish a fair bit higher.
Signed by early next week then. There's quite obviously other factors at play here, slowing things down, than an incompetent Charnley. He managed about six hundred deals last summer, so he can certainly move quickly when he's allowed to.