Possible Clues:

• Professor retired from regular work
• Retired (professor)
• Use timer training out of university? It's academic!
• Designation of retired person
• Former professor maybe rues time wasted
• Exhaust me, returning to America retired
• Sure time to travel, like some retired academics
• Retired but retaining a former title as an honour
• Honorary title for a professor retired from active service
• Take case back - it retains value when retired