Arsenal vs Chelsea pre-match centre

Chelsea have signed Emiliano Martínez from Aston Villa for £7.5m, dropping Robert Sánchez after a costly error against Fulham. The deal ends eight years of goalkeeping instability since Thibaut Courtois left, and marks the eighth transfer between Chelsea and Villa in four years.

Aston Villa have completed a club-record £65m signing of Nicolas Jackson as Ollie Watkins departs for Al-Hilal after 108 goals in six years. The underlying numbers show Jackson creates more chances than Watkins ever did, but his big-chance conversion record raises questions about whether Villa have fixed their finishing problem or just changed its shape.

Gabriel Martinelli's Arsenal exit is down to personal terms after a verbal €65m package was agreed with Al Hilal, a deal that would become Arsenal's record sale. The move confirms his fall down Arteta's pecking order and sets up further attacking business involving Barcola and Gabriel Jesus.

Aston Villa have entered official talks with Chelsea over Nicolas Jackson, with a £60m-plus package on the table and Unai Emery driving a reunion with his former Villarreal forward, as Ollie Watkins's own Villa future grows increasingly uncertain.

Manchester City are preparing a formal opening offer for Enzo Fernandez as Chelsea hold firm on £120m, with the Argentine reportedly now open to a move that would complete Pep Guardiola's chaotic midfield rebuild and rank as the second-most expensive deal in Premier League history.

Chelsea are closing in on an £34.3m (€40m) deal for Atalanta and Italy defender Honest Ahanor, their second raid on the Serie A club's defence in a month. The move fits a clear pattern under Xabi Alonso of stockpiling versatile teenage talent amid a wider summer rebuild.

Chelsea's £7.5m deal for Aston Villa goalkeeper Emiliano Martínez is confirmed by the BBC, ESPN and the Guardian, even as the same day's rumour column still treated it as speculation. Meanwhile Crystal Palace's hijack of Villa's move for Joel Ordóñez has forced Unai Emery to pivot to West Ham's Jean-Claire Todibo.

Nottingham Forest have agreed a club-record £50m deal for Liam Delap as Chelsea simultaneously open talks to sell Nicolas Jackson to Aston Villa, exposing a costly striker cull at Stamford Bridge. Conflicting fee reports of £50m and £68m highlight just how fluid deadline-week valuations can be.