Didn't get to watch the Crystal Palace game live, but just watched it, and Sakho is legitimately a world class beast of a human being.
Absolute cracking buy by the looks of it.
The one thing about monster centre halves that are also quick, is that there's no "figuring them out" like there can been with say, Coutinho for example.
"Okay, you know his strengths, he's a monster, he a good tackler, good in the air, quick on the ground....soooo good luck"