COMMENT: Blame Rog! Napoli's very own Mystic Meg. A nudge. A push. This can't be a coincidence. Days after a sly dig at Maurizio Sarri, the Chelsea manager was confirming what Marko Rog had basically foretold.

It must have slayed them. Victor Moses and Danny Drinkwater. Okay, as Sarri stated, he had warned both of his impression months ago, but for the manager to go public like that. To virtually end both players' Chelsea careers. It must have hit them like a sledgehammer.

Pushed last week about the lack of minutes afforded Moses and Drinkwater, the Italian left nothing to chance: "I think the situation is that Drinkwater for me is not suitable for a midfield (ahead of Jorginho or Cesc Fabregas) with two midfielders. I told him two months ago what I think.

"Moses is more suitable for playing like a wing back, than a winger or a full back. Do they have a future at Chelsea? I don't know. They have to improve but their characteristics are a little bit different."

Bang! You're out. The affable, salt of the earth Sarri. The one who has the players smiling again. Who insists on life. Football. Being "fun". In a few short sentences he'd basically transfer-listed two of his senior players.

This is the other side of Sarri. The ruthless side. The one Rog - all the way from Naples - was warning his Chelsea counterparts about the previous week. If you're not in the picture. If he's marked your card. There's little chance of a way back in Sarri's world.

Rog has been a revelation for Napoli this season. That's Carlo Ancelotti's Napoli. The former Chelsea manager declaring the Croatian untouchable, "as important as (Kalidou) Koulibaly and (Piotr) Zielinski". Which certainly wasn't the case last season under Sarri.

"Now I'm playing more," declared Rog. "Ancelotti gives us peace, serenity. He involves every player in the squad. And when you get your chance, you want to make the most of it."

It was subtle, but clear. In Naples. Particularly inside the offices of the club's owner Aurelio de Laurentiis. They know Sarri's MO.

“We had to give Emanuele Giaccherini away because he was never taken into consideration and the same went for Nikola Maksimovic," complained the movie mogul last season.

“Roberto Inglese could've come, but would he have played? He reached double figures for Chievo.

“(Simone) Verdi didn't want to come, and yet we had made an incredible offer. He was afraid of never getting to play."

If you don't fit. If his mind is made up. Sarri's not for changing. Which Rog learned the hard way.

"I was disappointed not to be called up for the World Cup," he also stated. "But I understand why. The coach couldn't select me if I was not playing."

And today. At Chelsea. For Rog, see Moses and Drinkwater. The manager privately - and now publicly - telling the pair to move on.

Spare a thought for Moses. Outstanding for Antonio Conte in his title winning season, the wing-back announced his international retirement in August - upsetting many inside the Nigerian FA in the process. The plan was simple. To give himself the best chance possible to win over the new manager. But today, he's effectively without a club and an international career...

But that's Sarri. At least one side of the manager. The unrelenting, cutthroat side. The one he's had lean on to take him from the eighth tier of Italy's football pyramid to now being in charge of one of the world's great clubs.

But this approach does have it's flipside. And it's something that should encourage Chelsea's young players. For while Sarri will blank those he regards as dispensable. If he's playing you. Even if just for the odd substitute's appearance. It means he has a plan for you. Respond in kind and he won't stand on reputation. You only have to consider the change in Sarri's public approach to Ruben Loftus-Cheek and Ross Barkley to see this process at work. Six weeks ago, they were falling short of requirements. Today, they're "complete" players and "the future of England". Andreas Christensen (and his Dad) would do well to heed what is happening around him.

We're now seeing the same with Alvaro Morata. If he sees something in the player, Sarri will persist, even while berating him in public. This is the other side of Sarriball - and the Spaniard's two goals against Crystal Palace is proof enough it works.

As it turned out, Rog's comments were a forewarning for some at Chelsea, but not all. Sarri does have his ruthless streak. It'll have stunned those close to Moses and Drinkwater. But being clear in what he wants from his players is never a bad thing in a manager.