Good post. Kulu's defending is a hugely underrated aspect of his game.
I mean, he was the best player in the entire league for tackles in the final third, both in total and per 90 mins.
His output for G/A was poor but I'm pretty sure his turnovers led to the most amount of goals scored too.
I'm not advocating for not replacing him, just that his ability to do this is important to the Ange system.