Jamie Carragher has identified the Leeds United player Chelsea must stop as they target top spot in the Premier League this weekend.
Frank Lampard's men host Leeds on Saturday knowing a fourth league win in five games will take them to the summit, with neither Tottenham nor Liverpool playing until Sunday.
But the Stamford Bridge side will face a team who beat Everton 4-1 last Saturday inspired by a virtuoso performance from Kalvin Phillips.
And he is the man who Chelsea must nullify, according to Carragher - who said the midfielder's performance against Carlo Ancelotti's side was reminiscent of Manchester United legend Paul Scholes in his heyday.
"When he was pressed, his passing was fantastic," Carragher told Sky Sports. "Away from home, it is perhaps the job of the striker to come deep onto him, but I felt Richarlison could have tucked in to make a box to keep Leeds to one side.
"But all Phillips did all evening was switch play - it was a Paul Scholes performance. He had acres of space and ran the game from minute one to 90."
Carragher said with the modern-day tactic of playing three-man attack posed a problem for coaches of who should press the holding midfielder.
He said Chelsea must learn from Everton's failure to do so at Goodison last weekend - and suggested which one of Lampard's players he thought could try and take Phillips out of the game.
"When the second half started, I expected to see something different from Everton and a plan to stop him, but the space around him was unbelievable," said Carragher.
"It is a problem for coaches because of how teams play now.
"If you're coming up against Leeds United, who are brilliant as a team - not just Kalvin Phillips - he has got to be a major part of your team talk. Exactly the way Paul Scholes was when you came up against Manchester United.
"You had to stop Scholes pulling strings in midfield, and against Everton last Saturday, Phillips produced one of the best performances from an individual I've seen this season.
"If you face Leeds, you've got to stop him. Maybe it's a job Tammy Abraham can do in dropping deeper."