Ajax are passing on the permanent option for on-loan Chelsea wing-back Juan Familia-Castillo.

Ajax Showtime says Familia-Castillo will return to London at the end of the month, with his loan deal to expire.

The 20 year-old was a permanent fixture for the Jong Ajax team this season, making 23 appearances and delivering six assists.

The decision by Ajax is a surprise as Familia-Castillo was viewed as a long-term successor for in-demand senior left-back Nicolas Tagliafico.

However, he will now return to Chelsea, though could quickly be on the move again with many clubs keen across Europe.