I needed a winger who could cross well so I tried Mahrez. I was impressed at first as he felt quite fast on the ball when I put catalyst on him but over time I realised that he wasn't that good. About 8 out of 10 easy shots would either hit the post or go way wide of the net and this ended up costing me games. He is still good value for money as long as if you don't rely on him for goals.
Pace (with chem style)
Strength is good for a winger