The Bundesliga is one of Europe's most popular football leagues, and it's no surprise that there's always a lot of excitement surrounding the transfer market. Here are some key players to watch in the Bundesliga transfers this season:

1. Lionel Messi: The Argentine superstar is expected to return to Barcelona from Paris Saint-Germain next season. However, he could also choose to stay at PSG for another year if they offer him more money or better terms.

2. Thomas Müller: The German forward has been linked with several high-profile moves this season, including a potential move to Manchester United. He's currently playing for Bayern Munich but could be tempted to leave for a bigger club.

3. Robert Lewandowski: The Polish striker has been a fan favorite in the Bundesliga since joining Bayern Munich in 2018. He's set to sign a new contract with the team this summer, which will likely make him even more valuable on the market.

4. Julian Nagelsmann: The German manager has been a hot topic in the Bundesliga this season after leading Bayern Munich to their first league title since 2019. He's likely to be considered for a managerial position in other clubs, especially those looking to win titles.

5. Alexander Gomes: The Brazilian midfielder has been making waves in the Bundesliga with his performances for Borussia Dortmund. He's set to join Manchester City next season and is expected to become a major player in the English Premier League.

6. Kevin De Bruyne: The Belgian midfielder has been a cornerstone of Manchester City's success over the past few seasons. He's likely to continue to be a major player in the English Premier League and may be considered for a move to other clubs.

7. Kai Havertz: The German winger has been making a name for himself in the Bundesliga with his impressive performances for Chelsea. He's likely to continue to be a major player in the English Premier League and may be considered for a move to other clubs.

These are just a few of the key players to watch in the Bundesliga transfers this season. Keep your eyes peeled for any rumors or developments as the transfer window continues.