Lamela's popularity among fans is incredible and for ages I was one of his biggest fans but people really need to wake up and smell the coffee.
The guy is just simply not good enough to merit the slack he's being afforded. When you see Lamela play, more often than not it really is difficult to come to any conclusion other than 'he's working hard', and while that's all well and good, it's not a something that someone in his position should be getting game time for.
When we strip away the shithousery, realistically he can't beat a man, his shooting is pretty crap, his passing is suspect to say the least, he's weak on the ball, he's slow as fuck, his weird technique and style just doesn't suit the high intensity of the PL, and crucially, he really does posses zero threat to the opposition in an attacking sense. He's scored 14 league goals in 5 seasons. So so poor no matter what way it's dressed up.
Ideally, this Summer we would say adios to Coco and bring in a player at the level of Son and Lucas, for example someone like Neres at Ajax, to replace him, but as others have said his new deal and constant fitness issues means he'll be near impossible to get rid of, so we'll probably be sitting here same time next season having the exact same debate.