“Tonight is gone and so Sunday is the next big thing. Naturally, a very, very strong game, strong game.

“We played them earlier in my time. They caused us all sorts of problems in the game, all sorts of problems. They played exceptionally well for long periods, for long periods against Hearts as well too. We need to be up for that challenge.”

Meanwhile, Uefa’s disciplinary body will review reports from officials before deciding if any disciplinary action will be taken after Thursday’s game was held up for more than three minutes when tennis balls were thrown on to the Celtic Park pitch.

After the match, O’Neill criticised the throwing of the tennis balls.

Supporters have staged protests against Celtic’s board in recent months, including some fans boycotting the Scottish Cup home win over Dundee.