I suspect a little part of him, deep down, is actually enjoying all this. The longer they’re shit, the greater his achievements look.
I wouldn’t go as far as to say he planned all this but the evidence is there for all to see, that in his last few years he abandoned his long held youth development policies, for a quick fix reliant on aging players who could give him one good season.
If he genuinely had that club’s best interests at heart, he would fuck off from being a constant presence hanging around the place and only ever show his face on match days.