In my opinion, the Bundesliga (Germany) has the best players in this Transfer Market. Here a list of some promising players:
| Player | Age | Team | Position |
|---|---|---|---|
| Leon Bailey | 22 | Bayer 04 Leverkusen | LW/ LM |
| Kai Havertz | 20 | Bayer 04 Leverkusen | CAM |
| Jonathan Tah | 24 | Bayer 04 Leverkusen | CB |
| Kevin Volland | 27 | Bayer 04 Leverkusen | ST |
| Jadon Sancho | 20 | Borussia Dortmund | RW / RM |
| Denis Zakaria | 20 | Borussia Mönchengladbach | CDM / CB |
| Emil Forsberg | 28 | RB Leipzig | CAM |
| Nordi Mukiele | 22 | RB Leipzig | CB |
| Lukas Klostermann | 23 | RB Leipzig | RB |
| Ibrahima Konaté | 20 | RB Leipzig | CB |
| Dayot Upamecano | 21 | RB Leipzig | CB |
Breel Embolo (Borussia Mönchengladbach) and Erling Haaland (Borussia Dortmund) also play in Bundesliga, however, it is improbable they will leave their clubs. Embolo has only played one year for Mönchengladbach; Haaland six months for Dortmund.
Ligue 1 (France) is the second best European league with promising players. Among them:
| Mamadou Fofana | 22 | FC Metz | CDM / CB |
| Lucas Tousart | 23 | Olympique Lyon | CM |
| Moussa Dembélé | 23 | Olympique Lyon | ST |
| Boubacar Kamara | 20 | Olympique Marsella | CB |
| Julian Draxler | 26 | PSG | CAM / Winger |
| Eduardo Camavinga | 17 | Stade Rennais FC | CM |
| M’Baye Niang | 25 | Stade Rennais FC | ST |
Source: Bundesliga (Instagram) 
Source: Ligue 1 (Instagram)