Absolutely agree, imo the vast majority of the problem happened further up the pitch, usually with Son (who is somewhat excused due to carrying an injury) repeatedly losing the ball and us getting caught out of position (wing backs and/or midfielders anticipating Son holding ball up or laying it off and moving accordingly). Almost as big a cuplrit was the 'press' the front players employed, which was so pitiful that it troubled no one, except our own midfield because it usually caused Hojbjerg to break from shielding the back line in a vain attempt to join the press, then he was easily bypassed and hey presto, opposition running at our central defenders.We need the new defenders that's a given and we all agree on that but perhaps by not defending inside our own box every game and giving the ball straight back to the opposition every time we got it will help our defenders whoever they are. Our defence will have different problems this year no doubt but at least our out ball won't be kick it up to Kane and hope he can play Sonny in.
Sure the defenders could have done better individually but if we get the fundamentals of a proper press right this season, then regardless if it's Tapsoba, VdV, Dier or Donald Duck, they'll defend better because the TEAM is defending better. And , even if it is Tapsoba or VdV rather than Dier, we will still concede goals at the back post on the right hand side if Porro is playing there !