Martinez was happy to name Jagielka club captain following the retirement of Phil Neville.
"When I arrived I still had a decision to make," he says. "It doesn't matter who the captain was, you need to make your own decision but I never had any doubts that Phil was ready for that role.
"He's the perfect age to take the dressing room forward and he has the qualities that are needed to be successful.
"He's guided by the next challenge. Now he has the perfect challenge in front of him, which is to guide this golden generation we have at Everton."