Ronald de Boer, the twin brother of Ajax manager Frank de Boer has slammed on-loan Arsenal striker Yaya Sanogo.
The assistant coach to Ajax A1 has laid into the style of play currently on show in Amsterdam and in particular picked out the Gunners loanee for criticism.
Writing in his column for Voetbal International, the former Dutch international claimed he has seen no qualities in the Arsenal man since his arrival in Holland.
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He said: "I heard Frank say last week he is one of the best ones which he has ever worked with, however, when I see Sanogo, I still have my doubts.
"I have still found no qualities with which you can do something.
"I think that Ajax has too little depth, the real speed is lacking, meaning that your opponent can never be surprised. An opponent of Ajax can therefore cope quite easily under pressure and that makes the team relatively easy to defend against."
The verdict from De Boer will come as a blow to Sanogo, who is still settling into life at Ajax following an unsuccessful loan spell at Crystal Palace last season.
The 22-year-old did score a hat-trick in Ajax's 6-1 friendly win over Qatari side Umm Salal and will be hoping to continue that form when the Eredivisie kicks off on Saturday.
SANOGO WILL STRUGGLE TO MAKE THE GRADE
Sanogo has failed to impress since joining Arsenal from Auxerre in 2012 and this loan spell may be his final chance to stake his claim to Arsene Wenger that he is worthy of a place in the first-team come next season.
In two seasons in the Premier League the French striker has failed to score in the league and also failed to hold down a starting role at either club in London. A move to Holland may help him find his goalscoring touch, however there are doubts he will ever have the ability to become a regular for Arsenal.