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.
Manning wants to speak with general manager John Elway and president/CEO Joe Ellis before making a firm and final decision to play. That discussion should happen before the team leaves for the combine next week.
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.
Manning needs 2,148 yards to break Brett Favre's NFL record for most career passing yards. If he returns and stays healthy, that mark will fall by mid-season.