Clue: Lewis gets disheartening little news on Oxford's missing former president (6)
Answer: LENNOX
Explanation: Definition: Lewis
A charade of LE ('disheartening **L**ittl**E**') plus N N ('news' – two of them) plus 'OX[ford]' minus FORD ('missing former president', Gerald, of the USA), for LENNOX Lewis, former boxer. The surface suggests a lost Inspector Morse episode.