Celtic defender Gary Caldwell can't believe Arsenal are complaining about the tackling that went on in the first-leg of their Champions League qualifier.

Ahead of tonight's clash at Emirates stadium, former Newcastle United centre-half Caldwell said: "I was surprised to hear some of the comments coming from their camp after the first leg about our 'physical' challenges.

"Tackles go on in football. It's part of the game and I don't think any challenge was malicious on the night. Obviously, you might get caught but, as a footballer, I would take it as a compliment if somebody was kicking me. I don't think we are an over-physical team but, if it rattled them, it's something we can use again in this game.

"The first half-hour of the first leg had nothing in it and, if we had got a deflected free-kick goal on the night, then who knows what would have happened?

"Yes, they've got great quality and were probably the better side, but there wasn't anything in the game. At no point were we over-run or under a lot of pressure defensively."