And since you brought up Collado - assuming Depay comes what will his cost be compared to Collado when you compare signons, wage+length of contract and count off potential selling value? 10 times more or 100 times more?
The club is already trying their best to get rid of 10-15 players without much success so far, many of which are more talented than Depay.
My main reason for being negative, after not liking the player, is that he'll be taking up a spot for people like Collado, Konrad, Trincao, or even those below them on the ranking, say Peque, without adding much.
Messi is already an obvious starter, Griezmann has been as well, this year Fati may be fit, and under Koeman I am sure Depay would start most games too. Then there's Aguero, and I think Coutinho can do what Depay does better, if you want that.