Chelsea left back Baba Rahman is on his way for a medical at Schalke ahead of confirming an 18-month loan deal.
The 23-year-old, who has recovered from a knee problem, was also a target for Everton and Inter Milan.
It will be Rahman's second loan stint in Gelsenkirchen, having spent four months at Schalke at the start of last season.
The former Augsburg defender cost Chelsea an initial fee of £14million when he joined them in 2015.