Here's a hypothesis....
SISU get an offer for Turner from Cardiff who want to offload Parkin. Parkin turns up at City, as reported in the papers, and dosn'tpass his medical or can't agree terms - whichever it is. So, that element of the deal is out of the window. However, Turner's agreed terms and there's no way back. All of this being done at SISU level, as even the Telegraph can't understand the choice of Parkin, given his style of play and Thorn's playing mantra.
SISU have a PR disaster on their hands, just at a time they don't need it. They go to Thorn and tell him they can release some of the Turner cash. Ask him if he wants a striker, which of course he does, and he gives them the names of McDonald and Le Fondre. Tells them McDonald would be his first choice but he's been injured and isn't match fit.
So, Le Fondre is courted, but - yet again - we make a donkey's arse of the negotiations. Again, as reported in the papers attributable to quotes from the Rotherham chairman. Le Fondre joins Reading, and the PR disaster for SISU is gaining even further momentum.
As a last ditch effort, they offer a crazy deal to Norwich for McDonald, which could total some £400K, but which is a compound of a small deposit - given his lack of match fitness - a value based on appearances, goals, us staying up, or going up, sell-ons, etc. in reality it costs us peanuts, but SISU's arse is saved.
McDonald arrives at the club and Thorn states that which is attributable to him.
Much of the above being conjecture, of course. But then again, so is much of the balance of what's posted on this issue. Difference being, there's an element of published fact against the above potential sequence