Chelsea have received a formal loan proposal from Borussia Dortmund for left-back Ian Maatsen but have still to agree the terms.
Chelsea turned down £31.5m from Burnley in the summer and his opportunities under Mauricio Pochettino have been limited this season.
Chelsea have been looking to raise funds by selling him but may now accept a loan with obligation to buy.
Maatsen rejected a permanent switch to Burnley in the summer, after helping the Clarets win promotion to the Premier League while on loan last season.