Peyton Manning has already begun working out to prepare for the 2015 season.

Manning wants to see where he is physically in the next stage of the evaluation process.

Manning is expected to work with renowned strength and conditioning coach Mackie Shilstone this week, Jeff Duncan of The Times-Picayune reported.

Shilstone is a specialist in career longevity, most famous for his work with boxers Roy Jones Jr. and Bernard Hopkins.

John Elway's confidence in Manning suggests the quarterback's slump was attributable to a lingering thigh injury rather than a sudden loss of arm strength that will remain a problem going forward.