The Gers striker has received plaudits for appearing to clean up his act so far this season after FIVE red cards last season.
Speaking in his Sunday Post column, he said: “His disciplinary record has been good this season after his five red cards in the previous campaign.
“But one swallow doesn’t make a summer, and question marks remain.
“There is no doubt Celtic players will try to wind him up, and get a wee nibble at him here and there. That’s a part of the game.
“It’s up to Alfredo not to rise to the bait. It is solely his responsibility to behave.
“But I’m sure every other team in the past few weeks have tried to niggle him and get him to retaliate in certain situations, and he hasn’t risen to it.
“That’s a sign of him maturing and learning his lesson. But the game against Celtic will be the toughest test of all for him.”