I don't think he was underappreciated. We're undoubtedly a much better team with him in the middle linking the midfield to the attack. I think Ozil plays better with Santi in the team because he finds him in the final third. Without him Ozil has to come deep to get it.
He’s been the best player of the year. He didn’t just show up for four or five games... He was THE MAN when his team was in turmoil and this season which has had four of the 12 months of the year inserted into it all, he’s been a million light years ahead of anything playing the sport.