How many players did have proper rest after world cup? Remember few players came bit early for preseason and many didnt even have preseason.
Lloris, Trippier, Toby, Vertonghen, Dembele, Dier, Alli, Kane all played in semi fianls/finals of the world cup. Then you have players like Eriksen who played in R16 or QFs, Son played in world cup and then in Asia cup.
So maybe lack of preseason is hurting their chances. Will be interesting to see how they cope up in the next few months with 3 games in a week schedule.