Borussia Dortmund are confident keeping hold of Ian Maatsen.
The fullback joined BVB on-loan from Chelsea in January, without a permanent option.
However, Chelsea have let it be known Maatsen can be sold this summer.
Interest from the Premier League is arriving for Maatsen, but his priority is to stay in Dortmund.
Indeed, his father Edward said last week: "We are working on him staying at the club."