Possible Clues:

• Although scholarly it is of no practical significance
• One may have a chair but it's practically unimportant
• Irrelevant; teacher
• A scoundrel in charge holding me up at university?
• Learned
• Professor possibly having no bearing on the situation
• Fellow who's learned what's not relevant
• Don is a blighter, torturing mice
• Well-read, two accounts about Ms Moore?
• A learned rotter has the mice in bits