This is exactly what I have been advocating against the so called "lesser teams" who will sit back against us. Son is not effective with his back to goal and his touch and hold up play is particularly poor at the moment. We do need a traditional centre forward though to implement this tactic
Part of the problem imo is the several different ways our squad is lacking balance. Several of those ends up with us being not great at breaking down parked buses, something that is difficult enough at the best of times.
-Centre backs that aren't great on the ball.
-Central midfielders where there's a choice between good enough on the ball and good enough defensively, no real functional pair that brings enough of both.
-Wing backs that are better in full back areas than the final third.
-Forwards that aren't great in tight areas, that need space to exploit (Kane not included, he's great at everything).
A traditional centre forward to play target average crosses at (because that's mainly what we are able to produce) helps. But it's imo not a fix, teams that have gotten really good at this have to be good at attacking in other ways too.
Is there a traditional centre forward, capable of just beating a PL centre back in the air to score from an average cross? Surely, yes. But that only gets us so far imo. I can't think of a team relying mainly on average crosses to a target man getting good enough, consistently enough to break down parked buses.
Can we find a player that can also do that and help us in the other ways to break down teams that sit back? Not so sure. Because we also need him to be a good finisher, work hard, right attitude etc.
The alternative solution is to find players that help us more with the other ways of breaking teams down.