Gianluigi Quinzi, to start.
I was just about to mention him
, although he's Italian I have already seen him some times and I like his game a lot, he was born in 1996 and he's gaining some good results on the Junior tour (5 titles overall)
Another good prospect is Serbian Nikola Milojevic (1995). By the way, Quinzi is by far the first 1996 in the Junior rankings, being ranked #57 and followed only by the #139 Borna Coric from Croatia.