The Portuguese guided the club to Europa League qualification last season.
Ange Postecoglou and Jose Mourinho are the names being linked with the vacant Nottingham Forest manager's job.
The club last night sacked Nuno Espirito Santo just three games into the new season.
The Portuguese had been in charge for 21 months and guided the club to Europa League qualification last season.
But Espirito Santo is understood to have fallen out with owner Evangelos Marinakis over the club's transfer policy, despite signing a new contract in June.
He had this to say when asked about his position as manager before the international break.
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