English forward has been the perfect loan signing. And yet, there is an ‘and yet’, absurd though that can seemAt the end of Barcelona’s 2-1 win at Atlético Madrid on Saturday night, as the players stood celebrating before the small pocket of supporters applauding them from high in the north-west corner of the Metropolitano, Diego Simeone approached Hansi Flick, shook his hand and reminded him of something: “You’ve got to come back.” It came as an invitation, born of admiration, and also a warning. This was only the start of a trilogy in which they face each other three times in 10 days, and the concluding chapter there would be different.A different competition, for a start. Goals from Marcus Rashford and Robert Lewandowski, the latter on 89 minutes, had virtually secured Barcelona the league title but it was going to get bigger and mean more. Atlético, already adrift, had rested players; the last time Barcelona had been there – in the Copa del Rey semi-final first leg – they had beate...