Not too sure what most people see in Depay what makes them think he will be some kind of superstar.
Lets put it this way its well documented he has a bad attitude. We already have very good wingers who are inconsistent. Such as Mirallas, Deulofeu.
Depay has been woeful for Man Utd, he has done nothing for them apart from against a few league 1 ability sides in the europa league. Apart from causing problems in our dressing room what do you expect him to bring?
Another person completely missing the point.
It's the 'type' of player that Koeman wants to fit the system he plays.
Depay has and never will be an out and out winger. He's a wide forward - similar in that way to Gabbiadini, for example.
His best form came in Holland, with PSV playing 4-3-3.
Koeman wants his sides to play with three quick, energetic forwards who can all finish and create chances.
Del and Lennon are out and out wingers. Kev can play the wide forward role but isn't consistent enough.
People need to stop looking at it with such a black and white perspective. It's not just the player, it's the type of player that fits a style of play that Koeman wants.