The winger has been linked with Arsenal in recent weeks.
Asked about the need for Cherries to fend off any interest in Fraser, Ake said: "Ryan has been superb for us this season. You could see on Saturday a few good balls again.
"His assists have been very good for us. He is always working very hard. He is one of the main guys this season and the club or especially me want to keep him.
"He is a superb, top, top player. Every day he shows that in training but also in the games with the amount of crosses he puts in and chances he creates. He is a very, very good player."