Kobbie Mainoo's emergence as a key first team player at Manchester United has quickly elevated his standing at the club, drawing interest from rivals Chelsea.

Chelsea are leading the race to sign 19-year-old England midfielder Kobbie Mainoo, whose contract talks with Manchester United have reached a stalemate. (Mail) Meanwhile, Borussia Dortmund are monitoring Chelsea's 21-year-old Austrian-English attacking midfielder Carney Chukwuemeka. ( Sky Germany)

The Blues have invested heavily on midfielders, breaking the British transfer record twice in quick succession to recruit Enzo Fernandez and Moises Caicedo. Chelsea also beat off significant competition from Liverpool to sign Romeo Lavia who, after an injury hit first season, has shown real promise this term under Enzo Maresca.

Kobbie Mainoo's Manchester United future is in doubt with the England international yet to agree new terms to reflect his place in Ruben Amorim's squad following his remarkable rise

Wednesday delivered plenty of big storylines as a huge breakdown in Arsenal contract walks was revealed. Plus, Marcus Rashford's blockbuster Man Utd exit is taking shape and Chelsea have received approval for the potential signing of Kobbie Mainoo.