There may be a case for Saiss, but Coady wanted off so that he could continue playing regularly (something that Wolves couldn't guarantee), and hopefully fulfill his ambition of representing England in the World Cup.
The Mix appeared to return a 50/50 split on whether we should have kept him (by playing him regularly) or move on and put our future in the likes Collins and Kilman, which persoanlly I think was the right decision.
To leave us so short of adequate cover in defence was the wrong decision though, in my opinion.