I mean you absolutely did say that: "never setting the world on fire but ok, average - Bernardo Silva, walker, de bryne, Salah, mane, Jota, Diaz, Rat face Robertson, coutino etc."
Bernardo Silva: Instrumental in Monaco reaching CL semi-final and winning Monaco first league title in 17 years before he signed for over £40m.
Kyle Walker: 2x PFA team of the year right-back at Spurs before signing for over £45m. Was he not just as fast and fit there before they signed him?
De Bruyne: Pulled up silly numbers in Germany before signing for over £50m and showing the same form in the PL straight away.
Salah: Murdered teams in the CL before Chelsea signed him, lots of loans out, had nearly a 1-in-2 goal ratio at Roma before signing for the RS for nearly £40m.
Mane: Ripped up the PL with Saints, terrorising full-backs with his pace before signing for them for over £30m.
I could go on but the point is these were not just "ok" "never setting the world on fire" "average" players that were signed and magically became amazing and super fit. The fact is most people don't watch football players until they get to the PL so they have no real way of comparing them before and after.
Sadly you just have to say: hats off, well scouted, well coached. We've spent millions on tosh, they have too but some of them really came off. These players weren't slow and unfit before they joined the top 2 teams but you'd know that if you knew them beforehand. Leeds consistently run further and sprint more than these teams but are never once accused of doping.
Re: Coutinho? I honestly never thought was as good as everyone said anyway and was gobsmacked at the Barcelona move. He's also doing really well at Villa now, are they juicing him up?