After considering his future at the club, the 74-year-old decided to stay, winning two out of three matches post-international break, culminating in the thrashing of Hearts last weekend.

Former Celtic manager Strachan said: "Every manager has a moment of doubt after a painful defeat where they question if they want to continue.

"But after stepping back and reflecting, Martin O'Neill realised how good the opportunity at Celtic is. You can tell when a manager owns their interviews, and it was good to see Celtic play so well.

"Martin is the right man for the job."

Celtic next face Celta Vigo at home in the Europa League, before a trip to the capital to face Hibs at Easter Road.