It works for Palmer at Chelsea precisely because his circumstances are very different to what they'd be at City.
He's a lad who thrives off having attacking freedom and very little in the way of defensive responsibility, which is exactly what Chelsea give him. Their midfield is comprised of two DMs (either Enzo and Lavia, or Enzo and Caicedo) who do all the running and protecting and fetching so that Palmer can concentrate on what's in front of him.
If Palmer's at City playing as an attacking CM, he's got to have the engine to run and run and run even when he doesn't have the ball. At Chelsea he can take breaks and fade out of games for stretches whenever Chelsea aren't in possession, because Maresca knows they need Palmer at his sharpest when he's receiving the ball high up.
He's basically Chelsea's Haaland, just playing deeper. He's the lad they accommodate for. Our midfielders and wingers press like fuck and do all the running because Haaland's at his best when he's been out of the game for a bit and is sharp when the ball drops to him 15-20 yards from goal. He can't do all the chasing and shouldn't.
As I've said before, I think Palmer is being a bit overrated (by the media and by City fans) because the narrative that we've finally, as a club, "made a mistake" by selling him is an effective story to sell. He does vanish in bigger games, he does tire out a bit easily if he doesn't take 15 mins to duck out of the action and hide a bit.
I think he also benefits from teams not parking the bus much against Chelsea. He's got lots more space to play in than he would were he still at City. There was a table posted on here that teams sit, on average, 10-15 yards deeper against City than they do against Chelsea. It all adds up to what we're seeing from Palmer at the moment.
But at the same time he's a very talented young lad thriving in a team that's built for him, and more power to him. He knew his destiny lay elsewhere, he knew he deserved better playtime, and he knew City were never going to build the team around him like he wanted. He made a smart move and Chelsea's gamble has paid off.
At the same time, that doesn't mean City made a mistake either. We got £45m slapped on the table in front of us for a lad who'd started 13 senior games and looked like he couldn't stay fit. We didn't have the gift of hindsight and there's no way of knowing what Palmer would have achieved with us had he stayed.
For what it's worth, I don't think he's going to become a top, top, top player in a top, top, top team. I just don't think he has the stamina to go for 80-90 minutes as often as you need to become a genuine all-time great. I don't think he'll reach De Bruyne's levels or be as decorated as Foden will be when they both retire in 12 to 15 years.
I think his legacy will be more like Ozil's than De Bruyne's, if that makes sense?
But he'll probably still win a handful of trophies with Chelsea, I'm sure. Maybe even a Premier League title if it continues going well under Maresca. And fair play to him. It was the best move for all parties. City to just have to make sure we miss him as little as possible with better recruitment in future transfer windows.