It's definitely a very good national team. They certainly have the ability to win the tournament.
I assume you know their current and former NBA players already (Larkin, Yurtseven, Osman, Korkmaz, Ilyasova).
Sehmus Hazer - he's a young two guard. He's probably one of Turkey's young NBA prospects. He's a fairly good player, but maybe too young to do a whole lot at such tournaments. He can score and he's a pretty good athlete. Personally, I like him more than Korkmaz.
Goksenin Koksal - he's a big, strong, physical guard. Decent ball handler. Good rebounder for a guard and a pretty good defender. He doesn't offer a whole lot on offense, but he can get to the rim and score. A decent role player for them. Probably one of their better role players actually.
Melih Mahmutoglu - he's a pure shooter with deep range, and he can hit shots from all areas of the court. He's very dangerous if the defense lets him get open looks running off screens. He's also a very experienced player. Other than his shooting ability, he doesn't offer a team that much on offense. But he can definitely score in bunches if you let him get open looks from screens. He's like a poor man's Juan Carlos Navarro.
Sertac Sanli - He's a very big body. He's also a quite good center. He's one of the better centers in the EuroLeague at the moment. He's a much different kind of center than Sengun. He's not an all around and very high skilled kind of guy on offense like Sengun. But he's very good at what he does. He's a big strong center that will finish well around the paint area, off feeds from guards. He's a good rebounder and he's physical on offense and defense. He's great at setting screens and playing pick and roll as a big. He's also good at pick and pop from mid range.
Alperen Sengun - He's very young for a tournament like this. I think he just turned 19, or does so in a few days. Despite his age, he's very skilled for a big and especially so for one his age. He's just one of those natural basketball players. I don't know how much he can realistically do for their national team right now, considering his age and that he's only played in mediocre teams and leagues in Europe. But his basketball game is extremely well developed for a big his age.
Bugrahan Tuncer - He's a big physical guard that can play at one or two. He's an Efes player in EuroLeague, but he doesn't play much on that team. From the little I've seen of him play, he seems like a fairly decent point guard / two guard. Pretty good offense skills, solid athleticism, physical on defense. He's actually one of the best guards in the Turkish League, he just doesn't get much playing time, since his team is so deep.
Dogus Özdemiroglu - He's a tough and physical guard that can play one or two. He's pesky on defense and fairly high energy. He was seen as a big prospect as a youth, but he has kind of been a bust. Up until this season, he didn't score much at senior levels. But then this season he finally started to have some big offensive games. So maybe he's finally starting to develop into a player, from being a talent.
Metecan Birsen - He's a big strong 3/4. He was considered a big talent as a youth player. He's pretty much been a bust though so far. But he was a decent player in FIBA Champions League this season.
Samet Geyik - He's a stretch four. He's probably like 6-9 to 6-10 and seems to have pretty good length also. He was considered a big talent as a youth. He's pretty much been a total bust though. For the most part, he doesn't do much for his teams. But occasionally he does flash some talent. I've seen him have a few big games here and there. He's talented, he's just never developed into what he could be.
Berk Ugurlu - Would be fine for them probably in a role like as a 5th guard. Was considered a big talent at youth levels. So far, he ended up being a bust. He's a big point guard, and he's a decent player in FIBA Champions League.
If they base the team around Larkin on offense, which media seems to indicate they will, it's not the same level team he's used to. Efes is clearly a better team. For example, in Efes he had Micic playing at two guard to help him, and he's much better of an offensive player than guys like Korkmaz or Osman. So that style of play might not be as effective, against some of the better national teams, when Larkin doesn't have such a guard like Micic playing next to him.
All in all, it's a pretty damn good national team though.