And amid the transfer speculation, the 23-year-old looked far from happy in training yesterday for the French outfit.
Mourinho knows Fabinho well, having given the Brazilian his debut as a Real Madrid player back in 2013, and it is claimed that the Portuguese coach is still a big fan of the player.
Fabinho, 23 is also a capable right back, famed for his passionate displays and this latest episode in his Monaco career could be the beginning of the end.
Monaco have already lost Tiemoue Bakayoko, Benjamin Mendy and Bernardo Silva to the Premier League and have stonewalled Kylian Mbappe's and Thomas Lemar's attempts to jump ship.
Monaco won Ligue 1 last season, playing an nearly unparalleled brand of attacking football, which ensured they also reached the Champions League semi-finals, with Fabinho and Bakayoko particularly excellent in the middle of the park.
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Monaco midfielder Fabinho appeared to storm out of training on Monday as he seeks a summer move away from the club. He registered 12 goals from defensive midfield last season.