Rangers could attempt to sign players before the club is officially out of administration.
Charles Green is aiming to have a company voluntary arrangement (CVA) approved on Thursday, after which there is a 28-day cooling-off period.
But SPL rules state that, with board approval, clubs in administration may replace players whose contracts expire.
While there is no guarantee of SPL board approval, Rangers could use the rule to try to bring in replacements.
If the CVA is approved, the cooling-off period would take Rangers to mid-July.
Pending the SFA's appellate tribunal's decided punishment in place of the 12-month signing ban set aside by the Court of Session, Green has confirmed he told a supporters' meeting last Wednesday that he has a list of 19 target players drawn up, five of whom are involved at Euro 2012.
And he says he has added £1.5m to the budget Ally McCoist and the administrators Duff & Phelps had been working to for next season.
Green had also been examining the possibility, if Thursday's creditors' vote goes in favour of a CVA, of setting aside the 28-day cooling-off period, to allow a swifter exit from administration, and has also referred to a £10m stadium-naming deal with "an airline investor or alternative".
"I've been speaking to a number of people," he said. "I've said all along, stadium-naming is an emotive issue, but whatever we do it would always be Ibrox Stadium."