Never heard of him, looks like he got subbed today after 57 minutes.
I had a quick look on the Besiktas forum and a few of the posts suggested they wouldn't be too bothered about him going. One post said they thought he was overweight.
Doesn't seem like the type of signing we need for the second half of the season.
Given he was linked with Sunderland last week it's probably a load of agent BS.