The summer transfer window is heating up with several Premier League clubs making significant moves. Chelsea are close to signing Maxence Lacroix from Crystal Palace for around £51m, while also showing interest in Kerim Alajbegovic, an 18-year-old Bosnian winger from Bayer Leverkusen, with a potential £30m bid. Manchester United have boosted their midfield with the signing of Aurelien Tchouameni, reportedly for £68m, as they rival Arsenal and Chelsea for various targets including Alex Scott and Eduardo Camavinga. Arsenal have officially signed Christos Tzolis from Club Brugge for £34m, replacing Leandro Trossard who moved to Besiktas. Meanwhile, Arsenal are preparing a £70m bid for Newcastle's Bruno Guimaraes. Liverpool have made an initial bid for Monaco's Maghnes Akliouche, facing competition from PSG. In other news, Barcelona confirmed the signing of Karim Adeyemi from Borussia Dortmund.