Chelsea transfers adviser Piet de Visser was a key man in their signing of Standard Liege defender Kenneth Omeruo.

The 18 year-old Nigerian is joining ADO Den Haag on-loan from Chelsea for the remainder of the season.

"According to Piet de Visser, Omeruo is truly a great talent and will be ready for the Premier League in two years," said ADO chief Paul Beyersbergen.

"The next six months he'll spend with us, he may still need to adjust, but we think that he will then stay with us."