Chelsea are among the sides to have been scouting Porto goalkeeper Diogo Costa in recent games, according to 90min.

Kepa Arrizabalaga have started ahead of Edouard Mendy since the arrival of Graham Potter but the futures at Chelsea are in doubt ahead of the summer transfer window.

Kepa and Mendy, aged 28 and 30 respectively, are out of contract in 2025.

Costa, 23, was Portugal’s starter at the World Cup and has kept 13 clean sheets in 25 games this season, including three in the Champions League.

Costa isn’t the only goalkeeper that Chelsea scouts have been watching. Brentford’s David Raya, Brighton’s Robert Sanchez and Everton’s Jordan Pickford are all targets for Chelsea.