Happened to watch the Lille-Lyon game on Saturday.
Lyon used 3-4-1-2 formation with 2 CMs - Aouar and Ndombele - which performed identical roles on each halves of the pitch. Both were sitting deep and had the same function as Pep's usual 'double pivot' in front of the back 3 - initiating moves and catching oppo's counters. Most of the time they stayed on the same line, occasionally one of them roamed further up the pitch - usually it's far more creative Aouar - but I wouldn't say that one of them is more 'defensive' than the other.
I tried to follow every action of the midfield duo and oh boy, Aouar is probably the first youngster in years that's screaming 'Xavi' for me. Looked the best midfielder on the pitch, on par with Lyon's number 10 Depay. His passing and ability in tight spaces are as close to young Xavi as it gets. And he's very intelligent, does only the bare minimum needed to complete a team move.
I can see why he's gone a bit under radar of the press:
- he's playing quite deep, and pressing barely exists in the French league, so the opportunities to show his technique are rare
- CMs are not meant to do a lot in attack in the current Lyon setup
- he has fantastic close control but isn't flashy, looks even awkward when you watch him for the first time
- I guess his breakthough has happened only in the last few months. When I watched CSKA-Lyon last season, the midfield duo was all over the place.
Ndombele, on the other hand, didn't do anything of notice. I reckon his skillset - tackling, aggression, dribbling, ability to hold the ball under pressure - stands out against better teams that dominate possession and press all over the pitch. It's no coincidence that Ndombele's most praised performances were against PSG and ManCity.
But when his team becomes a protagonist, Ndombele looks far less useful, he's below par as a deep lying playmaker. Avoids the press very well, but rarely makes creative passes afterwards. IMO Kovacic as Madrid's DM is a good comparison, the main pattern of play is the same: get the ball under pressure, dribble 1-2 opponents (even when it's not necessary), then make a simple pass.
Think Ndombele would be a good 8 or 6 for pressing teams focused on fast transitions, like Liverpool. I'd prefer City to avoid him and focus on more creative solutions.