The 21-year-old has eight Rangers goals to his name already this summer, and has adapted seamlessly to Scottish football since his summer move from HJK Helsinki.
And Caixinha reckons it’s because of his blistering form that he could be earmarked for some rough treatment – and is demanding Morelos doesn’t retaliate in the white-hot atmosphere of an Old Firm match.
Speaking via the Daily Record, the Portuguese coach explained: “He’s young, he’s gifted and he’s scoring goals.
“He’s enjoying playing games but he needs to control his emotional side. I need to send an alert and that alert is that I know he is going to be provoked.
“My concern and my job is making him calm and not responding to that. But he’s a guy that when things are growing and the environment is getting hot, he’s not stepping back and he faces the challenge.
“He just needs to understand how to face the challenge – because he is going to be challenged.
“I want him to have his temperament. If I take his temperament out then he’s losing his identity. He just needs to know how to control it. Especially in situations that are normal or when things are coming already as part of a game plan.”
With Jozo Simunovic and Dedryck Boyata both looking likely to start the match as Celtic’s two central defenders, Morelos could have his hands full trying to win any sort of tangible time on the ball.
But do you think there’s any chance Caixinha is right? Is Brendan Rodgers really the kind of coach who sends his players out with the aim of ‘provoking’ opponents? Or would it be naive not to?
What do you think?