West Ham are close to signing Swansea midfielder Flynn Downes (left) but could be set to sell defender Issa Diop

Swansea midfielder Flynn Downes is having a medical ahead of a £12m move to West Ham, who are in talks with Fulham over selling defender Issa Diop.

The deal is close to being finalised for Downes, who is having the second part of his medical, with West Ham increasingly confident they can complete the signing.

The Hammers are light in the central midfield area after club captain Mark Noble retired in the summer and the former Ipswich midfielder could fill that combative void.

The 23-year-old made 39 appearances in all competitions last season for the Championship side, who look set to replace Downes with Joe Allen.

Also, West Ham are also in talks with Fulham over the sale of Diop, but there is a gap in valuation between the two sides.

Initial talks had centred around an initial £12m plus performance-related add-ons but the Irons value the centre-back at around £20m.

The 25-year-old, who joined West Ham for a then club-record £21.9m from Toulouse in June 2018, started just 10 Premier League games last season as he made 26 appearances in all competitions.

Fulham are in the market for a central defender, having previously approached Manchester United over Eric Bailly's availability earlier this window.