AS Monaco are the latest club to be linked with the frozen out Irishman.
Houllier said: "With Stephen, we will see. I have been pleased with him.
"He has a different attitude to the beginning so he will be soon back.
"But I've got to find a balance in the team at the same time. I've got Agbonlahor, Young, Heskey, Downing, who all are attacking type players."