Crystal Palace have made a £27m bid for Chelsea's Conor Gallagher as they step up their interest in signing the midfielder on a permanent basis, according to reports.
Gallagher spent last season on loan at Palace, but returned to his parent club at the start of the summer to pursue a regular first-team place at Stamford Bridge.
However, the Eagles have not given up hope of bringing Gallagher back to Selhurst Park, and have now submitted a formal offer to Chelsea, as reported by The Times.
The 22-year-old flourished under Patrick Vieira last term, registering eight goals and three assists to help Palace to a mid-table finish.