Mata wrote for his personal blog: "Many of you will have followed the international games, especially with the UEFA Nations League starting. One of the biggest fixtures of the opening games was without doubt England vs Spain, which finished 2-1 in our favour.
"It was a great result, although England didn't give up until the final whistle in an attempt to at least take a point.
"The worst news from that match was Luke Shaw's collision, which forced him off the field due to injury. As you're all aware, he has been in really good form over the last few weeks, I hope that it won't be anything serious and that he can be back fit as soon as possible. I'm sending you a big hug and my best wishes, Luke."