A t the beginning of the final training session before their biggest game in a decade, Atlético Madrid’s players lined up by the centre circle at the Metropolitano and waited for their coach to come. Diego Simeone arrived and ran through the middle of them, from Juan Musso and Jan Oblak at one end to Antoine Griezmann and Ademola Lookman at the other. As he passed, head down, they cheered and hit him – if not quite as hard as they do when it’s a player’s turn. Gauntlet run, applause echoed round the empty stadium. Happy birthday, mister . Simeone turned 56 on Tuesday. He has spent almost 20 of those here: first as the captain who won the double, then the coach who lifted Atlético’s next league title, 18 years on , and now leads them into his fourth and their seventh European Cup semi-final, nine years since the last. What do you get the man who has it all? “Buah!…