That is according to former France and Tottenham star David Ginola.
Manchester United boss Jose Mourinho yesterday revealed Ibrahimovic is set to return to action by the end of 2017.
The Swede initially left the club in the summer but re-signed after proving he would be back in time to play a major part of this season.
Romelu Lukaku was bought in the summer as a direct replacement for Ibrahimovic and has scored 11 goals in his first 17 appearances for his new side.
The Belgian has started every Premier League game so far this season for Manchester United but Ginola does not think he will find it as easy when Ibrahimovic is fit.
Ginola says Ibrahimovic caused problems during his time at Paris Saint-Germain, upsetting fellow centre-forward Edinson Cavani.
“Lukaku was up front, he was the main man,” he told talkSPORT.
“He was surrounded by young players like (Marcus) Rashford, like (Anthony) Martial, playing with young players that don’t say much.
“Zlatan Ibrahimovic is the man. When he was playing in Paris, Zlatan, alongside Cavani, Cavani couldn’t say a word.
“Cavani was relieved when Zlatan left Paris.
“It’s going to be interesting to see the next few weeks, how Mourinho is going to manage that.”