Karanka was speaking after their FA Cup defeat to Hull City.
"Jose and I are friends, so always since I have arrived here it has been talked about. I said to him 'listen, can I take Michael Essien'. Maybe not, but me and the club are working to take players," he said.
"I am happy (Omeruo) will come here to help us. I think that he will come until the end of the season."
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