I dont really know much about Raya, but in the other side, it will be very difficult to get rid of De Gea, and bench him.
He has, so far, 2 good seasons for us and in terms of balance in the dressing room it will be tough.
But, yes we need upgrade on him.
I like Ilan Meslier a lot, and think he has a lot of potential, but would Leeds sell us a player ?
Diogo Costa is very good with his feet, but shot stopping is not his best qualities. Would he be an instant and super upgrade to De Gea ? I don t know.
I think Meslier should be the choice for me.