The standard of the defenders aside the instruction they are given for set plays is leaving them woefully exposed.
The fact we have the joint top goals conceded from corners is honestly a farce, the fact its not being recognised and adapted is a farce.
Against City, Everton and Liverpool we've essentially conceded the same front post header and every time its involved their best header of the ball getting a pretty much free run at the ball, for Everton in fact it was their two best headers. While our best header of the ball is stud in his 'zone' with little to no run up to jump and challenge for the ball.
There no way in hell another top flight team would continue to use a system that allows such easy goals, i get why this half zonal thing might work but you also need to make sure that the people who are man marking are actually capable of marking the offensive players, theres no way in hell you'd find anyone else in this league having a rookie full back who isn't over 6ft (i suspect) marking VVD, now way you go like for like.
Its insanity like this which'll ultimately cost Ole his job and honestly rightly so, it's naive to continue with a corner defending system that fails to do the basics.
I'd argue the only reason Ole is still in a job is to avoid scrutiny on Woodward and the board (not that they really care) but bad PR for the powers that be most likely effects potentially investors, stock market prices and most importantly sponsors.