Our "totally risk averse" defense last season was Lloris, 3 from Dier, Sanchez, Romero and Davies with Royal at RWB and either Sess or Peresic at LWB
Our defensive unit, even when Romero played was like watching the 3 stooges most of the time. If Dier wasn't playing opposition attackers through on goal, we had Lloris throwing it in his own net or Sanchez getting booed off the pitch after the worst 20 minute cameo in PL history.
This season we've had a keeper that I believe made no errors leading to goal all season, 2 top quality CB's at the top of their game, and pretty useful FB's. And we still conceded almost as many goals. I would, on paper at least, expect the current unit to concede 15-20 goals less over a season than we did tbh.