Roy Keane has the ingredients necessary to become the new Celtic manager, according to Martin O'Neill.
Former Manchester United captain Keane, 49, has been heavily linked with replacing Neil Lennon at Celtic Park following his departure last month.
Keane was O'Neill's assistant on two occasions, between 2013 and 2018 for the Republic of Ireland before the pair joined forces again as No 1 and No 2 at Nottingham Forest in 2019.
And speaking to BBC Sport, the 69-year-old Northern Irishman believes Keane has learned plenty since he retired from the game in 2006 after a 13-game spell at Celtic, and believes he could adapt to the demands he would face in Scotland.