Leeds United striker Mateo Joseph is quickly developing into one of the Championship’s top young talents and his goal for Spain U21s was more evidence of that. Joseph was named as a substitute for Spain’s European Championship qualifier away at Scotland on Friday night and was brought onto the field of play midway through the second half with the game all square. But Joseph took just three minutes to make his mark on the match as he netted the winning goal with an instinctive finish at the front post following an excellent piece of movement. His winner for Spain was similar to the one he score…