Everton are the latest team to have joined the race to sign Aberdeen star Duk.
The forward is in high demand after an impressive season in the Scottish Premiership.
Duk is wanted by Burnley, the Toffees, and other teams in the Championship and Premier League.
Per The Mail, Everton are hoping to secure the forward who has scored 18 goals this season.
However, his former club Benfica are due 50 percent of any sale, which means Aberdeen will want a massive fee to part with him.
The Scottish club are hoping to qualify for European football for next season as well.