As a Rennes fan who watched him a lot before he came to City, I repeatedly posted on here, whenever we were linked, that I didn't think he was a Pep player or a City player, in the slightest. And there were several former Rennes wingers I'd have rather seen at City before him, from Dembele to Raphinha.
Doku has always looked raw as fuck. Fast and tricky, but with little end product and not much of a tactical brain, based on some of the choices he makes with and without the ball.
That's why I was pretty astonished when we did actually sign him, but I remained hopeful and thought that, under Pep and surrounded by proper top class players to learn from, his rough edges might start rounding out and he'd learn much more about the tactical side of the game.
But, for now at least, he just hasn't. He's got wonderfully tricky feet and a fantastic burst of pace, but he so often goes down dead ends, gives it away incredibly cheaply, and doesn't contribute enough going back. If you took his trickery, pace, and long shots, and combined it with Grealish's composure and work rate all over the pitch, you might start to have the foundings of a proper top end winger. But that's the story of our whole squad at the minute, to be honest, too many players who just feel like bit parts, not enough "full packages" for a team of our standing.
Still time for him to come good, of course, but I have seen the same inconsistencies and issues in his game for so long now, I do wonder if it'll ever "click" for him or not.