How would we define "a shot"? I guess its possible, but do we really think its anywhere near likely that either ends up top 10 at their position in the league. I don't think so. I would say its unlikely, but possible.
Based on current development, I'd say they could be top 10 players at their position (RW for Kravtsov and C for Chytil)
Chytil is currently 18 (about to be 19). If you say his prime begins at 23, that is roughly 4 years from now, the following players should be exiting or have exited their prime already: Giroux, Malkin, Kopitar, Crosby, Backstrom, Pavelski, Bergeron, and Getzlaf. I know some of these guys are not top 10 right now (although Pavelski and Backstrom are very close). He'll just be entering his prime seasons by the time these guys are hanging them up. There is for sure a ton of contention for the top 10 centers of the future (5 years from now):
McDavid, Matthews, Eichel, McKinnon, Larkin, Barzal, Scheifele, and several others will be in the discussion. I think Chytil has a chance. His size, skating ability, creativeness, all land him with the ability to be at that peak. His defense will need to catch up, but at 18, I'd say he has plenty of time to get that part down.
As for Kravtsov, he was just taken in the top 10, and was a top 10 pick on many scouts boards. Set records in the KHL for points scored as a draft eligible player. On record as the youngest player to ever score in the modern KHL playoffs. He's an elite level prospect, in spite of the reaction around here. His size and skill will put him in the discussion of elite wingers. I know he didn't play in the WJC this year, but there is a chance that he doesn't this year either, unless his KHL team lets him go for the tourney. He might be too important for whatever team he is on to be loaned for the tourney.