Birmingham City assistant boss Eric Black admits the future of on-loan Celta Vigo midfielder Borja Oubina is undecided after his knee injury.

"He's torn his ACL so that, I would imagine, puts him out for the rest of the season," said Black. "It's hard to know about what happens in the future as we speak. Not until we see what the operation has entailed and how he recovers will we have an idea.

"It's a big blow for the boy because he was making a real effort to integrate himself in the club. He was learning English and even in the first 10 minutes on Saturday you could see that he is a competent footballer."