Keep or sell thread

[July Fourth]

I bought 5 youngsters (4*18 years and 1*19years old) 11 days ago, and 4 of them become "scouts" with a quality of 30 and 31. But 1 on them (M.Nastasić) didn´t develop as fast (or great) as I wanted.... Here is S. Nastasić compared to S.Kolašinac (my first choice)..

What do you guys think, should I sell or keep him?

I would sell Nastasic he will be 4*26 next season and like you say he is a slow trainer.