Nantes president Waldemar Kita said he has already made headway in his search for a new boss, and Vieira is being considered.
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Claudio Ranieri was once the darling of Nantes but things have turned sour and it appears likely he will leave. It feels like he's given up.
All football managers make excuses: their own short-sightedness, the blindness of match officials. But Claudio Ranieri has a new one.
Ranieri, who guided Leicester City to the Premier League title and took over at Nantes last summer, reported to be a strong contender for Italy job.
Nantes's Yassine El Ghanassy denied reports he has been given a prison sentence for repeated driving offences.
Belgium international El Ghanassy, who plays for French club Nantes, was given the jail term by a court in Bruges.
Marseille won a corner from which Florian Thauvin fired home after a goalmouth scramble in stoppage-time controversy.
Ranieri took over at Nantes on a two-year deal last summer, and the former Monaco boss has guided his side to fifth place in the table.
Tony Chapron, the French referee who kicked out at a Nantes player, has been banned for three months, with an additional three-month suspended ban.
Tony Chapron, 45, will face the commission on Feb. 8 after kicking out at Carlos following an apparently accidental collision between the pair.
Carlos was shown a second yellow card in added time of his team's 1-0 defeat despite seemingly colliding accidentally with Chapron.
Referee Tony Chapron has been suspended after being caught tripping Diego Carlos and then sending off the Nantes player during the match against PSG.
Paris Saint-Germain extended their lead at the top of Ligue 1 to 11 points after a narrow 1-0 win at 10-man Nantes.
Nantes have the third best defensive record in Ligue 1 and manager Claudio Ranieri is mounting a challenge for Europe.
Nantes' winning run at home was ended as Mario Balotelli's 75th-minute winner completed a 2-1 comeback victory for Nice.
Brazilian defender Lima scored a dramatic winner deep into stoppage-time as Monaco fell 1-0 to Nantes on Wednesday.
Edinson Cavani maintained his prolific goalscoring form with two more as Paris St Germain beat Nantes 4-1 to extend their lead at the top of Ligue 1.
Lyon were left frustrated as they failed to turn dominance into goals in a 0-0 draw at Nantes.
The Burkina Faso international only signed for Nantes in January, but is already understood to be keen on a move away.
Schalke have signed highly rated France under-20 midfielder Amine Harit from Nantes in a deal reportedly worth up to €10 million.
Nigerian defender Chidozie Awaziem has joined FC Nantes from FC Porto.