Jagielka takes on the club leadership from the departing Phil Neville.
He told evertontv: "He is ready now to step into that role. He is ready for that. It is a loss to lose Phil (Neville), but it has worked well because Jags has been doing it for a little bit and has had a chance to bed into that role and now he is going to assume the responsibility full time.
"He is one of the more dominant characters in the squad. He is very experienced now and someone that everybody can look to.
"It will be great for him. He is quite vocal, as vocal as Phil was really, and he does lead by example as well."