The mercurial Swede has made a blistering start to life in England.
The former Sweden international is in red-hot form following his summer move from Paris Saint-Germain, striking four times in as many appearances.
The Red Devils take on their bitter rivals Manchester City in Saturday's early kick-off, in Ibrahimovic's first taste of the local derby, and all eyes will be on what role he will play in the first battle of the season between the two clubs.
With City striker Sergio Aguero suspended and United playing at home, Jose Mourinho's side have a real chance of grabbing all three points in an important game.
Zambrotta, who played alongside Ibrahimovic at Juventus and AC Milan and was part of Italy's 2006 World Cup winning squad, has been impressed by his former teammate's introduction to life in the Premier League, report BT Sport.
"Wherever Zlatan plays he does very well," he said. "He is a winner everywhere he goes. He compares with the best players at the moment like Suarez and Neymar."
Zambrotta, who now manages Indian Super League club Delhi Dynamos also commended Ibrahimovic's personal qualities, adding: "I played with him twice and he's a good professional and has good motivation.
"I have always liked him."
Ibrahimovic, who turns 35 next month, has certainly set the Premier League alight with his first appearances in a United shirt, helping his side maintain a 100% winning record in the league so far.
Whether he carries this on or not, he will undoubtedly play a key role in the Red Devils' challenge for the Premier League title.
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