Dutch hero Ronald de Boer is happy seeing their coaches back en vogue in the Premier League.

Dick Advocaat's appointment at Sunderland follows Ronald Koeman's move to Southampton and Louis van Gaal's arrival at Manchester United.

"It is no coincidence that Ronald Koeman is doing great and Louis van Gaal now is in an upward trend," said De Boer.

"Let's say Advocaat is also going to do well and is successful with Sunderland. It indicates that for the English Premier League, which is the biggest league in the world, they're looking for the best coaches.

"So that ensures that the Dutch trainers are back in demand."