The way Bertus has described it also suggests a tactical problem. Silva's game is more about details rather than crunching tackles or scoring goals - not that he doesn't or isn't able to do that obviously - but that way he needs a manager to give stability and defensive structure. Ancelotti is good at optimising performances, while Blanc doesn't seem to be that level.
I think in terms of tactical intelligence TS is still (by far) the best, but because of injuries has declined physically. Still G(D)OAT. If there was no transfer ban for us and PSG willing to sell, get him asap.
Still remember his performance against Barca in 2013. Never seen something so good.