Um Ji-sung, Yang Min-hyeok, and Bae Jun-ho will all likely continue their European careers steadily.

For all three of them, this is effectively the decisive moment for whether they will settle into their European careers.
In particular, Um Ji-sung's incredible work rate, playmaking, and scoring ability all evoked nostalgia for his namesake senior, Park Ji-sung.
Personally, I feel that the national team needs Um Ji-sung more than Lee Kang-in right now.
Um Ji-sung seems like an all-rounder (hexagonal player), whereas I feel that while Lee Kang-in's playmaking is top-tier, he can't compete with Um Ji-sung in other areas.