AML President Sheikh Rashid claimed that the Parks and Horticulture Authority (PHA) tried to stop his party workers from installing a sound system at the venue.
He said arrangements had been completed to welcome Imran Khan at the public gathering.
Imran Khan will also give a roadmap to ‘Naya Pakistan’.
“[By our show of power] we will tell Nawaz Sharif that the nation stands with the judiciary and the JIT members,” Imran said in a recorded message released on Saturday.
The PTI and the Awami Muslim League are jointly organising the gathering.
A senior party leader said the PTI basically wanted to distribute copies of the Supreme Court decision disqualifying Nawaz Sharif as the prime minister.
“If the permission to drop the pamphlets from a helicopter is not granted, the PTI will distribute them at the public gathering,” he said.