But what's your point?
In the previous game we had a back 3 of which none were here 3 years ago. If it wasn't for injury that would have been a back 4 with stekelenburg in there too. Gueye is a guaranteed starter, bolasie would be if not injured, Valencia has started 4 of the last 5. Lennon and Deulofeu are seemingly out of favour with this manager but they were bought as first teamers, as was niasse. We have changed the squad significantly and no amount of goalpost moving will change that.
As I said earlier, it's perfectly normal to have the majority of the squad stay the same over 3 years - especially when you're talking about players the quality of lukaku, Coleman and Barkley. I wouldn't want them replaced so I'm not sure why we're suggesting it's bad that they haven't been.
Of course we need to replace certain players, that's obvious. The idea that we should replace the entire squad is a joke though, and if Koeman really needs to do that in order to get performances out of them then he is simply not a good enough manager for this club. Any idiot could get a team winning if they've spent a fortune on hand picked players, a good manager should be able to improve the ones he has, and work out a way of playing that gets the best out of them. Hopefully Koeman will start to do that now.