Advocaat told the Echo: “I don’t know enough about him yet, to be honest.
“I’ve seen the videos of him and we saw him against Holland, when he did really well when he came on.
“But you can only see in training what he can bring and if he is better than the others.
“He only got here on Friday, so we need to work with him more.”
“He will definitely strengthen our options at full-back,” added Advocaat.
“He’s really quick and played for the national team last week more as a right-winger, than a full-back.
“But his pace is superb.
“It’s all about balance with the full-backs, between going forwards staying back.”
http://www.shieldsgazette.com/sport...-keen-to-learn-about-deandre-yedlin-1-7460973
Well, that certainly goes against everything I've read on internet forums ever when it comes to picking the team.