The Japan international is currently out on loan with the Saints for the second half of the season, after leaving Anfield on deadline day. His last appearance came as a 65-minute cameo against Brighton in mid-March, with his last goal coming at home to Chelsea in February.
"We had communications this week, somebody here in our club to take a look at him, we discussed his position, discussed his development, and they were absolutely not unhappy," Hasenhuttl told Hampshire Live.
"He has got a lot of time to play so far.
"He's not had so much in the last two games, but I'm sure in the last six games he will also get chances to play.
"He is training well, he is a good part of the team, he is a professional player, good mentality, good character.
"I'm sure that he will get a lot more minutes to play until the end of the season and then we will look at what we do."
Hasenhuttl added: "When you see our shape, we are always very flexible and rotating a lot, so he can end up as a ten and he can end up as a striker.
"I think in both positions he is near the goal and he can attack. I think this is what he likes.
"We will hopefully bring him in a position where he can show his qualities, and everybody knows that he has quality in and around the box."
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