Casemiro relished the opportunity of swapping Madrid for Manchester, while also pinpointing how the club's impressive history made his decision even easier.
"Without a doubt it was down to the great stature of Manchester, because it's a massive club with a great history," Casemiro told United's club website in a special Q&A with some of the club's supporters. "For sure that was the big attraction for coming here.
"I think that the great standing this club has in the game and its great history are definitely the most important reasons to be here. It's also a fresh set of goals in a brand-new league for me.
"So that presents a really big and exciting challenge for me and I'm working really hard to achieve them alongside my teammates."