The Paris Saint-Germain forward will face a month on the sidelines after picking up a thigh injury in Wednesday’s Champions League win over Chelsea
The forward pulled up in the 68th minute of his side's Champions League quarter-final first leg with Chelsea on Wednesday and was forced to be substituted, with test later confirming a hamstring problem.
PSG have now revealed the Sweden international will miss the second leg against the Blues as he will likely be sidelined for a month, with scans expected to confirm the severity of the injury tomorrow.
"It's an MRI [scan] at this time," Nasser Al Khelaifi told RMC. "We will have the result within half an hour, an hour.
"But he will need at least four weeks of rest. He won't play the next game against Chelsea."
As well as missing Tuesday's return leg at Stamford Bridge, the 32-year-old will also be unavailable for the Coupe de la Ligue final against Olympique Lyonnais on April 19.
Lucas Moura, who replaced Ibrahimovic against Chelsea, has been given a vote of confidence by Al Khelaifi, who has backed the Brazilian to step up in the Swede's absence.
"I think Zlatan is very important for the team, but Lucas is ready," he said.
Al Khelaifi went on to stress that Edinson Cavani will not leave the club this summer, despite the player hinting at a possible exit admid reported interest from Manchester United and Chelsea.
He added: "Cavani is very important for us, he is very professional, very generous on the field, he gives everything. I appreciate that.
"If he wants to change position, it is not his decision, it is that of the coach and he understands. He is a star of PSG. And of course he will stay with us next season."