Leeds United's interest in Hidemasa Morita is long-standing, but it has reignited in recent weeks, with the Japanese midfielder reportedly open to a move to the Premier League.
According to the Daily Mail, the 30-year-old Sporting player has indicated a willingness to move to the North of England, but only if Leeds secures their top-flight status.
Leeds currently sit 15th in the league table, six points clear of the relegation zone with four matches remaining.
Morita's contract with Sporting is set to expire at the end of the season, meaning he would be available on a free transfer, despite ongoing calls for him to remain at Alvalade.
Should he make the switch to Leeds, the midfielder could be joined by fellow countrymen. The Yorkshire Post reports that Bayern defender Hiroki Ito and Feyenoord forward Ayase Ueda are also targets.
The Daily Mail also links Leeds with Danilho Doekhi, a 27-year-old Dutch centre-back whose contract with Union Berlin is expiring.