Sky Germany reported that the two parties have reached a full verbal agreement, signaling an exciting new chapter for the Bundesliga outfit.
Brentford have granted the 31-year-old Netherlands international permission to depart the London-based club this summer, paving the way for the transfer. Speculation about Flekken, a former SC Freiburg standout, joining Die Werkself reignited on Monday, capturing the attention of football fans across Europe.
While a final transfer fee remains under negotiation, estimates suggest Bayer Leverkusen will pay between 10 and 14 million euros to secure Flekken's services.
The deal, however, hinges on Brentford's ability to find a suitable replacement. One name prominently linked with the Bees is Liverpool's Caoimhin Kelleher, a 26-year-old Republic of Ireland goalkeeper eager for regular first-team action.
"Mark Flekken remains one of the top goalkeeper targets for Bayer 04 Leverkusen, as revealed in April," said Sky Germany's Florian Plettenberg in a recent X post.
"Recent developments have once again been positive. A lot now depends on how quickly Brentford can find a replacement. Flekken is ready to join Bayer!"
Bayer Leverkusen have shown ambition under new head coach Erik ten Hag, who took the reins earlier this month. The club's official X account hinted at their proactive approach, posting, "We're working hard to build a squad ready to compete at the highest level. Exciting times ahead for Die Werkself! #Bayer04"
Flekken, known for his commanding presence and sharp reflexes, has been a standout for Brentford, making 70 appearances since his 2023 move from Freiburg. His potential arrival signals Bayer Leverkusen's intent to challenge Bayern Munich for Bundesliga supremacy next season.
Meanwhile, Brentford have already begun their search for a new shot-stopper, with Kelleher emerging as a prime candidate to fill the void.
As the summer transfer window heats up, all eyes will be on both clubs to see how this goalkeeper shuffle unfolds. Will Flekken don the Bayer Leverkusen jersey, and can Brentford land Kelleher to steady their ship? Football fans are in for a thrilling ride.
Liverpool are intensifying their pursuit of Bayer Leverkusen's star midfielder Florian Wirtz, with negotiations for the German international reaching a critical stage.
Sunderland have reportedly turned down an initial offer from Borussia Dortmund for their star midfielder Jobe Bellingham, with the German giants falling short of the Black Cats' valuation.
Liverpool have reportedly secured a major coup by reaching an agreement with Bayer Leverkusen's star midfielder Florian Wirtz, outmaneuvering Bayern Munich in a transfer saga that has stunned German football.
Bryan Mbeumo says he is motivated to work even harder next season after a scintillating campaign with Brentford in the English Premier League.
