People who are saying we should have signed him when he was younger. He is actually better now as an all rounder.
Earlier in his career he played further forward as a number 10 or out on the wing. Where he is playing now, he is actually controlling the game, playing further back, linking defence with attack, looking up and making sublime passes with his range. Other players know that when he has the ball, they can start running and he will find them. He has released Bruno from his headless chicken phase, so he can play higher up where he is most dangerous. And Erikson can easily adapt to whichever striker is on the pitch, playing through balls for Rashford and Martial, or playing angled balls to the back post for Ronaldo to head.
He is so important for this team, and we are lucky to have him. He is actually a year younger than Kevin De Bruyne, who nobody is treating like an OAP. Yes, he had a defect with his heart, but it hasn't effected his fitness levels. Scholes and Carrick played until they were 37, and Erikson is only 30.