The Dutch defender has yet to feature for Saints since Hasenhuttl replaced Mark Hughes last month.
"Nearly every player [has] played a game until now but he didn't. It's difficult," Hasenhuttl said.
"Yeah, it's not the best for Wesley, that's right. It's the same for Gabbiadini or Steven (Davis). The guys went away to find other solutions, it's better for them.
"For Wesley it can be the same. We don't send any player away but if he feels like he is not used like wants from us, he should think about it."