Grimaldo is expected to join the La Liga club in a deal worth around 25 million euros, prompting Leverkusen to step up their search for a new option on the left side of defence.
According to reports from Germany, Guerreiro is firmly on the Bundesliga club's shortlist. The 32-year-old is currently available as a free agent after leaving Bayern Munich, making him an attractive option with no transfer fee required. His experience at the highest level, combined with his attacking quality and reliable left foot, makes him a natural candidate to fill the gap left by Grimaldo.
However, Leverkusen's new head coach, Carles Martínez, is believed to favour a different profile. The Spaniard is reportedly looking for a younger and quicker left-back who can add greater pace and energy to the team.
One player who fits that description is Arsene Kouassi of French club FC Lorient. The Burkina Faso international has also attracted interest from Bundesliga rivals VfB Stuttgart and Eintracht Frankfurt.
Kouassi already shares an international partnership with Leverkusen defender Edmond Tapsoba, a connection that could help him settle quickly if a move is completed. The 20-year-old is expected to cost around 20 million euros.
Aston Villa are pushing to complete a deal for Joao Palhinha and have stepped up their efforts to sign the Bayern Munich midfielder, following his stint at Tottenham last season.
Bayer Leverkusen have completed the signing of defender Facundo Medina from Olympique Marseille, the Argentina international penning a five-year-deal with the Bundesliga outfit.
Bayern Munich have completed the permanent signing of Senegal midfielder Bara Sapoko Ndiaye from Gambinos Stars, with the 18-year-old signing a contract until June 2031.
Sead Kolasinac experienced a nostalgic return to the VELTINS-Arena on Saturday, lining up for Atalanta against his former club Schalke 04 in a friendly.
