It's not the first paper (or expert) to look stupid.
And let's be clear I am not defending his views on City in any way shape or form. But outside of this forum, and Martin Samuel - where exactly are you expected to get information. Football is so polarised in the media hunt for clicks, balance and accuracy are no long important. Prof Hough is an expert in the theory of corruption , I have no idea about his knowledge or views on football. As such I assume his information will be from the usual media sources, and we know what they are like. If that's all you had to base you analysis on then you are not going to get the truth (or an approximation of it).
I don't doubt he's a rent-a-quote and it sounds great (for them or bad for us) that he came from the Centre for Studying Corruption but regards to his expert knowledge of this case you might as well ask Merson about the value of signing KDB.