Neil Lennon insists his Celtic players will not need warning about another possible Scottish Cup upset when they take on Berwick Rangers at Shielfield Park on Sunday.
The Irn-Bru Third Division club are massive underdogs for the fourth-round tie but the Hoops boss has in the past suffered from cup shocks as a player and manager.
"Upsets can happen on any given day and I've been involved in one or two myself," he said.
"But I don't think the players need me to tell them how important the game is or the consequences if they don't perform to their capabilities.
"Some of the players played against Ross County and I made my feelings clear afterwards because it wasn't the first time they had performed as poorly as that throughout the season.
"If it had been a one-off we could have accepted it but that wasn't the case and we don't want to repeat it.
"It would be a huge upset, no doubt about it, but it can happen.
"As a manager you are always thinking of the negatives going into games and how you try to avoid them.
"It's a cup tie, the cameras are going to be there and they are looking for a potential upset but the mindset of the players at the moment means they are looking forward to whatever game comes their way.
"There is a confidence about them and they look in good nick."
Source: PA
