Yes, Koeman employed long ball at the saints, Pelle being the focal point of it. And the setup when he signed bolasie was painfully obvious, as in get the ball to him first.
The players do take blame, but koeman also. When a new manager comes into a team his stamp can be seen. I said it in another post, Bobby bollocks got a team of work horses passing and over playing, yellow teeth got a gang of fairy boys running none stop, Conte got a group of deflated egotistical beaut's playing for each other.
He needs players, in fact he needs a new spine of a team. But don't automatically think that he will all of a sudden banish this long ball system because it's something he's talked about in the past as being beneficial