Rangers manager Derek McInnes has sent his best wishes to Martin O'Neill following the news that the Celtic manager is in hospital.
The 74-year-old was confirmed to be recovering after undergoing a "small procedure", with his club releasing a statement earlier today. He is expected to be released within 24 to 48 hours.
Asked about this in his press conference previewing Rangers' Europa League tie with Jagiellonia Bialystok, McInnes insisted he did not know any further details other than what has been in the public domain.
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But he sent his best wishes to his rival manager and his family, and hopes he will be well enough to return to work soon.
The Rangers boss said: "En route from the airport, I was informed that Martin had obviously had a small procedure. I don't know much more than that.
"Obviously it goes without saying that it's not the best of news and hopefully Martin is okay, him and his family.
"I'm sure he will be back to work, if he can, as soon as possible."
