Nathan Ake is a straight up upgrade from Bakayoko. I start out in a 5-2-2-1 and switch to a 4-2-3-1 in game. He plays along side Icon Petit and together I feel very secure in defense. Perhaps his best attribute are his interceptions. He wins headers, he's strong, and makes fantastic tackles. He's also very agile, which is hard to find in a CB/CDM and it makes tackling strikers and CAM's so much easier. His work rates don't effect him at all if you put 'Stay back while attacking' instructions on him. He's simply the best CDM in the premier league, if not the game not counting TOTY Kante or Icons. On top of all that he has pace. His passing isn't amazing but he hardly puts a foot wrong when passing.
Passing (kind of)
Dribbling (for a CB/CDM)