Collins' group met with Gretna administrators on Tuesday
Gretna will find out next week if they are to be saved by an Irish consortium led by the former Carlisle manager Roddy Collins.
The club's administrators met with the group yesterday but no assurances were given, and two other consortiums have also expressed an interest
A Glasgow consortium led by the businessman Paul Hughes is still waiting for their meeting.
They are hoping that will take place before Sunday's game against Celtic.
Collins said on Tuesday that the Irish consortium he heads has substantial funds to invest in the area as a whole.
The group is particularly interested in developing hotel and apartment complexes.
"You can't book a hotel in Gretna and you can't book a hotel in Carlisle because of people getting married in Gretna," he told BBC Sport.
"That would be of interest to the people I am dealing with."
However, Gretna are just one of three clubs being considered for investment from McMullen Properties, the others being English outfits Bournemouth and Rotherham.
Building magnate Anthony McMullen and his brother Ian had launched a takeover bid for Irish outfit Longford Town, but that deal fell through last week.
From a football point of view, it would be good for me to get back involved
Former Carlisle United and Bohemians manager Roddy Collins
Meanwhile, another group, believed to be from the USA, has also expressed an interest in Gretna, who are 22 points adrift at the bottom of the Scottish Premier League and likely to be relegated.
Gretna went into administration last week after funds from Brooks Mileson dried up following the millionaire owner's serious illness.
It has placed a question mark over the club's ability to stay afloat before completing their remaining fixtures.
But Collins, along with members of the McMullen group, has been in talks with administrator David Elliot, of Wilson Field Ltd.
And the former Carlisle United and Bohemians manager could take charge of the playing staff for the rest of the season should the takeover succeed.
"From a football point of view, it would be good for me to get back involved," said Collins.
Collins will be particularly remembered in Scotland for leading Bohemians to a Uefa Cup win over Aberdeen in 2000.
He had short-lived spells with Carlisle and Dublin City before joining Shamrock Rovers, who he left in 2005 after their relegation from the Irish top flight.