The brother and agent of Kiki Musampa says the Dutch midfielder is free to sign for Sunderland.
"He wants to play in the Premiership again - he feels that he has unfinished business there.
"The plan is for him to train with Sunderland and play in the reserves next week to prove his fitness.
"Then we will speak to Roy Keane and hopefully he will want to keep him."
Musampa can sign for Sunderland outside the transfer window because he is officially a free agent since leaving Trabzonspor.
"Kiki can sign for Sunderland, if Roy Keane wants him," said his brother.
"He was not happy at Trabzonspor and when they were late paying him, he decided to end his time there and move on.
"There is still a financial settlement to be sorted with Trabzonspor, but he is a free agent and he can join another club now."