Arsenal midfielder Mesut Ozil says he keeps in touch with Real Madrid captain Sergio Ramos.

Writing for arsenal.com, Ozil says he learned how to handle pressure when playing for Real.

He recalled: "If you go from Werder Bremen, where you're a talented young player, to such a big club full of big players, you're nothing. If you play for Real Madrid, even if you get a draw against Barcelona, it's the worst thing in the world. You have to win every game.

"If you win 10 games in a row and then maybe draw at home against a smaller team in the next game, you're under so much pressure. I really learned about controlling the pressure and enjoying it while I was there.

"That's what I do now, just enjoy playing under pressure. I had a good time there, a successful time too, and made good friends. My best friend was Sergio Ramos and I'm still in contact with him. For me, he's maybe the best defender in the world. He's a good guy, a good friend and a good singer too! Believe it or not, he actually has a nice voice."