I have used in this position a regular Cuadrado and an IF Callejón and none of them are as good as Suso. At first he was a little bit expensive but now you can have him for only 120k coins, which are worth it. He has great dribbling in game and can go past defenders easily, he is really fast and puts a real threat when playing against good LB's like Marcelo or Alex Sandro. Combined with an OTW Cancelo behind him that side of my team is superb.
One of the best things about this card is the shooting, when inside the box he scores almost everytime, long shots are great too, at least he assures you they're going to be at target. It took me a while to try and score with him, that's why he only has 40 goals but ever since I found out I can't stop scoring with him.
With the hunter chem style:
Sprint speed: 93
Shot power: 99
Long shot: 99
His defending is not that good:
Heading Accuracy 57
Standing Tackle 26
Sliding Tackle 20
but you should be covered with a good RB such as Cancelo, Florenzi or even Vrsaljko