Rangers chairman David Murray remains cautious about a proposal to increase the capacity at Ibrox Stadium.
Murray is considering plans to build more seats at Ibrox
"It is something that we are currently considering," Murray told Rangers World about plans to seat 4000 extra fans.
"There is a feasibility study being carried out, but we will only do it if we think it's sustainable,"
"We would need to enlarge the ground in certain areas, create some additional revenue streams and have bars, seating and disabled areas."
Murray was also reluctant to be drawn on the potential income for the club from a proposed casino.
The SPL champions have been given planning permission for a £120m gambling and hotel complex.
The Govan club must wait for a final decision from the Government, who will allow only one 'super-casino' in the UK, with Blackpool also in the running.
Murray added: "We have not given up on that. We've not shouted about it, but we are ahead of the pack now.
"If we were fortunate enough to be given it, then it would be a big revenue earner for us.
"We wouldn't actually build or run the casino - we would use our ground for the casino to operate on and they would pay us.
"But let's not get carried away, there is a long way to go before we can shout from the rooftops.
"It is a Government decision. It will go to the highest authority where the gaming licenses are given and, hopefully, we will be considered."