Some supporters feared Bailly, only 22, would struggle to acclimatise to life in the Premier League following just one full season in La Liga prior to his arrival at Old Trafford.
But much to the surprise and delight of United fans, the Ivorian has made a powerful start to life under Mourinho, unleashing a series of imposing, near faultless performances.
Speaking with ManUtd.com, Bailly outlined how the influence of Mourinho has helped him make such a seamless transition into the Premier League.
“Jose has taken me under his wing, almost like a son, as he does with other players as well,” he said.
“It’s a pleasure to be here, working with him and learning from him and I have to take advantage over the course of the years from all his experience. I am very lucky to have that chance and my future time here is going to be a great footballing experience.”
“Of course [it is],” he said. “You should always have to aim high and it all comes down to the amount of work you put in and the rewards you get back for that. I hope I can do this in the African Cup of Nations.”
Man of the Match against Leicester City, AFC Bournemouth and Hull City, and now United’s August Player of the Month – it has been quite the first month for Bailly. Against the odds, the 22-year-old has stamped his authority on the starting XI, and indeed the Premier League in general.
His volatile blend of brute strength, raw pace and controlled barbarism aligns perfectly with the physical demands of the Premier League. Alongside Daley Blind, the Ivorian is indomitable, seemingly incapable of doing anything other than decimating strikers.
But yes, I know, it is still early days: the initial signs, however, are unavoidably positive.