Rio Ferdinand and Gary Neville are in agreement over Chelsea's Premier League title chances this season.
The Blues are joint-top of the top-flight table after the opening four games of the campaign, with three wins and a draw to their name so far.
Thomas Tuchel, most recently, led his side to a comfortable 3-0 win over Aston Villa on Saturday evening, with Romelu Lukaku scoring twice and Mateo Kovacic also getting in on the act for the hosts at Stamford Bridge.
Despite Chelsea looking so strong, the likes of Manchester United, Manchester City and Liverpool have also showcased what they are capable of in the early stages of the season.
Former Manchester United team-mates Ferdinand and Neville have both shared their thoughts on the Blues' chances this season, with the former detailing the "concern" Tuchel's side give the rest of the challenging pack.
"Chelsea are a concern if you're trying to win the league. Any teams like Man United, Man City and Liverpool, will be looking at Chelsea and thinking: 'They look strong, they look solid, they have weapons all over the pitch'," Ferdinand said on his Vibe with FIVE podcast on YouTube.
"One of the biggest factors is that they are so stingy, they do not concede goals now.
"They have the best clean sheet record since Tuchel took over, I think they have the best defensive record since he took over in terms of goals conceded.
"He's making them a machine, that's the only way I can explain it. They look like a team as well who can play ugly, they can be abysmal on the day and then Lukaku can go and get two goals."
Neville, meanwhile, when speaking on his own Sky Sports podcast at the weekend, spoke about how Chelsea have become "robotic".
“I went home from Salford City to watch the Chelsea vs Villa game and Villa played well, they are a decent side,” Neville said on Sunday evening.
“But Chelsea are robotic, methodical. When they scored that first goal with Lukaku I just thought it was ominous.
“There is a feeling about Chelsea: clean sheets, the striker is scoring guaranteed, the players behind them and the midfield. They are going to be difficult to stop.
“The talk will all be about Pep Guardiola, Manchester City and Cristiano Ronaldo and Manchester United, but Chelsea, everybody knows they are serious, it was a real performance.”
