“Honestly, it's difficult to say," Carrick replied. "I think it's just because it's taken that much time.
"Yeah, I can't give you any more on it, really. It's one of those things with backs that, sometimes, you think it's alright and then, all of a sudden, it's not quite right.
"So, we're just kind of being patient and working through it, and we'll just have to see.
"We’ll obviously give him time and try to get him back as quickly as we can. But it's really difficult to say. I am not trying to hide anything.
"Literally, at the moment, we don't know, so we'll have to wait and see.”