The football world learned on Saturday evening that Ferguson had been admitted to hospital after suffering a brain haemorrhage.
He underwent surgery which was described as having gone “very well”, and messages from figures and clubs all around the football world have since poured in for the manager.
And Mata, writing in his weekly blog, paid a heartfelt tribute to the former boss, lamenting how he never got the chance to play for him.
“This blog’s entry is going to be particularly short, if you don’t mind,” he wrote.
“This Saturday, all of us were overwhelmed by the news about Sir Alex Ferguson’s health condition. This circumstance has had a huge impact on Manchester United, as you can imagine.
“All of us are united right now, wishing Sir Alex a speedy recovery. He has been a unique and fundamental figure in the football world over the last few decades.
“I’ve never been coached by him, unfortunately, yet I know well his incomparable legacy on this club, that winning mentality and fighting that we must honour in the last three games of the season, especially in the FA Cup final.
“To achieve that, we are going to work hard while we eagerly await good news about Sir Alex’s recovery. Have a nice week. Hugs.”
We can only wait and hope that Ferguson – the king of comebacks, the king of overcoming anything in his way, the de facto king of the art of management – makes a full recovery over the next few weeks.
His greatness, the sheer extent of what he achieved, transcends the normal parameters of the game, which explains why more or less everyone involved in football has extended their support.
Keep fighting, gaffer. Nobody knows what it means to fight – and win – more than you.