I love his pattern of coaching because during his time on Nantes wining was very easy for Nantes and with his good coaching skills he was able to build the club very well but after he left things became very bad for Nantes because they are not use to there current coach and even his coaching pattern is not working for the club because if it does they wouldn't have been on the relegation zone they are now, so like you said having Antoine Kombouaré back to the team will actually improve the performance of Nantes and possibly bring them out of the relegation zone because they still have the opportunity to improve on the table if they put more efforts.
I don't really understand why when a coach saves a team from getting relegated, they get him fired to let him leave them easily. Kombouaré was definitely a good coach for Nantes and if they kept this coach he could even bring more achievements for Nantes but they didn't do that and now it seems Kombouaré going to return to Nantes after a few years of leaving the team but he will have the same task he had before. He should try to keep Nantes in the League 1.
Checking the past teams Kombouaré before he worked on teams like Al Hilal in Saudi Arabia and this made me think maybe Kombouaré asked for too much money and they stopped working with their coach. But I'm waiting to see how he is going to perform in Nantes.
actually there is nothing to be surprised about about this because football is a safe business, there is a huge turnover of money in it, Nantes is taking wise steps before their team falls into the brink of relegation, at least they must be able to survive in their current position. Currently Nantes' points are only a slight difference from those in the relegation zone, if they enter League 2 it will be very difficult to return to League 1. Hopefully Kombouare can improve the performance of the Nantes squad until this season is over.