Terry Neill was recruited by the Arsenal board to replace Bertie Mee on 9 July 1976 and at the age of 34 he became the youngest Arsenal manager to date. With new signings like Malcolm Macdonald and Pat Jennings, and a crop of talent in the side such as Liam Brady and Frank Stapleton, the club enjoyed their best form since the 1971 double, reaching a trio of FA Cup finals (1978, 1979 and 1980), and losing the 1980 European Cup Winners' Cup Final on penalties. The club's only success during this time was a last-minute 3–2 victory over Manchester United in the 1979 FA Cup Final, widely regarded as a classic.
Try to answer this question if possible (otherwise reply "unanswerable"): On what date was Bertie Mee replaced by Arsenal?
9 July 1976