One of Barcelona’s eight World Cup winners reflects on how Spain’s triumph is inspiring them in the Champions League Dani Olmo nods towards his right arm. “Look: goosebumps,” he says. The Spain midfielder is sitting in a back room at Barcelona’s Joan Gamper training ground trying to pinpoint the moment he knew he was a world champion. “There’s an image in my mind with Ferran [Torres]’s mum: hugging her, the two of us in tears,” he says. “‘What your son just did … what we all did … this is histo…