AZ Alkmaar manager Gertjan Verbeek suggests that striker Jozy Altidore has been showing plenty of progress in recent times.

The 22-year old USA international scored his 11th goal of the Dutch Eredivisie season in the weekend's 2-2 draw with Vitesse Arnhem and although Verbeek has criticised him for missing chances, he does admit he has played with more vigor in the past few months.

"He really misses opportunities," Verbeek told Voetbal International.

"I think it's a matter of time. At Valencia (in the Europa League last week) I saw at least a striker who battled more than for the winter.

"The first few months I had trouble with his experience , it took me far too long. But in recent months, he definitely progression."

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