With the transfer window opening on June 1st for a 10-period to accommodate the Club World Cup, the gossip is beginning to heat up, meaning the return of our Transfer Tracker to keep you up to date with all the latest rumours and news.

00:56 CET - Florian Plettenberg has reported that Bayern Munich are focusing on signing a left-winger this summer and are keen on Liverpool's Cody Gakpo, as well as Kaoru Mitoma and Rafael Leao.

23:40 CET - A few minutes after playing his last game of the season for Al Nassr, Cristiano Ronaldo said "This chapter is over" in a cryptic social media post. Is the Portuguese legend leaving Saudi Arabia this summer?

17:55 CET - According to Sami Mokbel, Chelsea are close to agreeing a £70 million deal with Frankfurt to sign Hugo Ekitike in an attempt to bolster their strikeforce.

17:21 CET - Premier League champions Liverpool have "concrete interest" in Bayer Leverkusen's in-demand midfielder Florian Wirtz, the German club's sporting director Simon Rolfes has confirmed.

Read more here.

12:41 CET - According to David Ornstein, Newcastle are not taking up the option to extend striker Callum Wilson's contract, but could hand him a deal that is slightly more incentive-based. The player will decide what he wants to do next.

10:15 CET - Despite having a truly shocking season, finishing in 15th place in the Premier League and without European football, Manchester United look like they are on the verge of completing their first transfer, with a number of reports stating that they have agreed a deal to sign Wolves' Brazilian star Matheus Cunha.

10:06 CET - In what is sure to be one of the biggest transfers of the summer window, Fabrizio Romano is reporting that Liverpool have made an offer in excess of €100 million for Bayer Leverkusen forward Florian Wirtz, with the Premier League champions looking to get a deal done very soon.