The forward had an interesting start to his Premier League career and Lee says that will have earned him rave reviews from the Geordie faithful.
The striker made an interesting start to his Premier League career as he picked up a yellow card just 11 seconds after coming off the bench, thanks to a flying tackle that could have seen him sent off.
Lee though, wasn’t bothered by that, saying that if the forward can focus that aggression he can go on to do great things at the club.
“It was interesting to see Mitrovic was true to his word and quick to show he can handle the physical side of the Premier League,” he wrote on Kicca.
“I am sure he won over the Geordie fans with his passion. He’s a young lad and was obviously keen to show he isn’t going to be knocked about. If he can focus his aggression he can go on and do great things.”
He needs to score goals to prove himself
The forward was a big hit in Belgium with former club Anderlecht, as he managed to score an impressive 36 goals in 69 league appearances for the club in his two-year stint.
It is those goals that made new Magpies boss Steve McLaren make the move for him, with his side having been sorely lacking in a goalscorer last season as they flirted with relegation.
And Lee says it is now important that Mitrovic scores goals and proves there is more to his game than his ability to make a tackle, although it would have pleased the fans nonetheless.
"Any fan would rather see a player on his debut putting himself about a bit rather than disappearing inside his shell and going missing as others have done,” he added.
"Over the season I am sure he will calm down a bit and prove there is more to his game than his ability to throw himself into a tackle. What he needs to do now is go on and score goals like he did when he was playing in the Belgian league."