PSV Eindhoven coach Ronald Koeman has slammed Chelsea's appointment of Henk ten Cate as new assistant manager.

Koeman slammed the former Ajax coach, telling Catalunya Radio: "Giving more importance to Ten Cate than (Frank) Rijkaard for the successes at Barca in these last years is not good. And simply not right.

"I can't understand how Ten Cate can suddenly become coach of Chelsea, when at Ajax they've failed to qualify for the Champions League in the last two years and are not continuing in the UEFA Cup."