I-League 2019-20 trophy was handed over to Mohun Bagan on Sunday where Bengal Sports Minister Aroop Biswas and I-League CEO Sunando Dhar were also present.
When contacted, Mohun Bagan senior official Debasish Dutta said they are waiting for lockdown to get over as their sponsors are stuck in Mumbai.
Real Kashmir coach David Robertson, his wife Kim, son Mason, who plays for the club, and three support staff will fly back home on Thursday afternoon.
On Sunday, Mohun Bagan had stated that they were forced not to celebrate the customary occasion this year owing to the coronavirus pandemic.
The 2019-20 season of I-League was suspended on March 14 with four rounds to play though Mohun Bagan have already clinched the title.
ATK have qualified for an AFC Cup playoff spot next season. However, Mohun Bagan won an AFC Cup group stage spot with their I-League victory.
Earlier on Saturday, the I-League match between Real Kashmir and TRAU FC which was scheduled to be held in Srinagar did not go through.
The Sports Ministry on Thursday asked all national federations to ensure that any sporting event in India is conducted without any public gathering.
Mohun Bagan thus ended their time in the I-League with a title win as their merger with ATK means that they will be playing in the ISL from the next season.
East Bengal, with a man advantage for more than half of the game, dominated possession with 63 per cent of the ball against Real Kashmir.
