By Jamie Spencer Real Madrid have little concern over Vinicius Junior ahead of Sunday’s potentially decisive Clasico against Barcelona, even with the Brazilian being withdrawn before the end of Wednesday’s epic Champions League battle with Manchester City. Vinicius played 102 minutes of the contest, which eventually saw Madrid prevail on penalties in pursuit of their record-extending 15th European Cup. But he was replaced by Lucas Vazquez in the first half of extra-time due to injury, with the tie’s outcome still in the balance. Given that Madrid will host Barcelona at the Bernabeu in just a m…