This season:
Lamela
42 apps / 5 goals / 7 assists / 90 tackles / 94 crosses / 1303 passes
Chadli
41 apps / 12 goals / 5 assists / 30 tackles / 61 crosses / 1118 passes
I think Erik's all-round contribution is rather good, but his finishing product is lacking.
In fact, Lamela has more tackles than Rose (89), Vertonghen (74), Dier (57), Davies (48), Mason (87), Bentaleb (72), Eriksen (60), Kane (42), Dembele (53), Townsend (50).
Actually I can't find anyone in our squad this season with more. So those saying he is too slow and lightweight I'd suggest this stat goes some way to dispelling that myth.
The lad is clearly working his bollocks off when selected. I think with a little more variety in our play, he will find himself with a few more goals next season.
Definitely worth keeping, in my opinion. We have far more expendable players than young Erik. Who is still only 23, by the way. Has his whole career ahead of him.