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Postecoglou was Tottenham boss for exactly two years
Senior football correspondent
Ange Postecoglou is expected to replace the sacked Nuno Espirito Santo at Nottingham Forest.
Nuno left his position as head coach at the City Ground late on Monday night and the club are advancing with their efforts to land a replacement.
Sources are indicating that Postecoglou, 60, is a strong candidate for the position.
Initial contact is understood to have taken place amid a sense an agreement is possible.
Postecoglou was sacked by Tottenham at the end of last season following a dismal Premier League season when they finished 17th.
However, the Australian led Spurs to a historic Europa League victory at the end of the season to end the club's long-running trophy drought.
Forest currently sit 10th in the Premier League table after their opening three games of the season.
After 21 months in charge, Nuno's last match in charge was a 3-0 defeat by West Ham before September's international break.
It is thought Postecoglou will be appointed before Forest's trip to Arsenal on Saturday.