Same. I sort of get why he felt bitter at the end of his time at Madrid, but his first season back at Chelsea seemed to indicate that he’d recovered his good humour.
His football towards the end of his second season back became increasingly risk-averse (title notwithstanding); likewise the Champions’ League semi appearances. A loss of confidence maybe?
Whatever, the time came when he became more driven by successfully managing his exit from a club than actually winning stuff. His interest in doing his job at United seriously dropped off after he’d secured an improved contract in the middle of his second season.