Some of the Ajax fans have concerns over whether he'll be able to adapt.
"Anita is a good manmarker, good on the ball and in short passes and combinations. He's just not very well suited to play big areas and British football is pretty much known for playing with a stretched team which means the midfielder have to cover huge areas. That's why in British football tje box-to-box midfielder is so important. Anita isn't a box to box midfielder, as we say in Dutch he will 'drown' in a system like that. Whereas Arsenal have quite a European style I think Newcastle still has a more British style of play and for that style taller physically strong box-to-box players, with great stamina, good long range passing and a powerful shot from distance are more important qualities. Anita simply doesn't really fit that profile. He isn't bad in those areas, but not good enough I feel and his better qualities aren't utilized in that system.
As I said before, IMO this transfer has flop written all over it. It's a shame for Anita as it'll probably kill his carreer, but he's made his choice so he has to suffer the consequences."