There is no news yet on whether Roy Keane, the former Forest midfielder who assisted O'Neill during his five years as Republic of Ireland manager, will also be returning to the club.

O'Neill was a midfielder for Brian Clough's continent-conquering Forest team which won the 1977-78 First Division title and then back-to-back European Cups in 1979 and 1980. Clough managed Forest from 1975 to 1993.

Irishman O'Neill enjoyed success with Wycombe, Leicester and Celtic as a manager before less fruitful spells with Aston Villa and Sunderland. He left his role as Ireland boss in November.

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