New signings Conor Coady and Amadou Onana are available to make their Everton debuts for Saturday's trip to Aston Villa (12.30pm BST kick-off).
Frank Lampard revealed he has been impressed by England international Coady, who joined the Blues on a season-long loan from Wolves earlier this week.
The Everton boss described the signing as "a big deal", while also praising the leadership qualities of fellow summer recruits Onana and James Tarkowski, hailing the trio as the right type of characters "to drive the Club forward".
Speaking in his pre-match press conference on Friday morning, Lampard said: It's a big deal in any dressing room - leadership. When you're coaching and managing, you rely on people in the dressing room to relay the message and drive it home, because you can't do every bit yourself.
"James [Tarkowski] has been in all pre-season and has shown his personality, as well as his on-field abilities.
"In the short time Conor has been here - just a few days - he's been a great one for me because normally you have to do a lot of reference checks on players to find out what type of people they are.
"It took me about five minutes to speak to Conor and understand the type of person he is - and I knew it before the phone call, if I'm honest.
"The minute he came up as an opportunity for us, it was a huge deal for me and the Club.
"The conversation we had was relatively short. I remember going against him while I was manager of Chelsea during COVID times with no fans - and it struck me, his voice on the pitch and how much he drove his team. And, obviously, he's a quality player, a regular in the England squad.
"I spoke to him and became aware of his situation, I told him what I thought about him as a player and what we're trying to do at Everton.
"With Amadou as well, the personality he's shown as a young man, with a real positive, infectious attitude straight away.
"It's not all about that [the character of a player] but it's a big part of what we're trying to do - to bring the right people to the Club to drive it forward.
"We're happy in terms of the business we've done so far to that point."
Meanwhile, striker Salomon Rondon returns for the trip to Villa Park after completing a three-match suspension.
But Lampard refused to be drawn into revealing more specific team news, as he "weighs up getting the sharpest players on the pitch" after a tricky pre-season.
The Blues will be without Yerry Mina after the the Colombian damaged ankle ligaments in the 2022/23 Premier League opener against Chelsea.
Ben Godfrey, meanwhile, is expected to be out for approximately three months after undergoing successful surgery to repair a fractured fibula in the same match.
Andros Townsend remains a long-term absentee after suffering an ACL injury in March.