Stevenage say their manager Graham Westley has been offered a contract to replace Phil Brown as boss at Preston, but has yet to agree to the terms.
The two clubs cannot negotiate a compensation package until Westley confirms his intention leave Boro.
"It's uncomfortably late in the week for both clubs not to know where they stand," Stevenage chairman Phil Wallace told the club website.
"But there's nothing we can do until Graham decides where he wants to work."
He added: "Only then can we get on with the task of replacing him if that becomes necessary. If he stays then it's business as usual."
Westley's management team of John Dreyer and Dino Maamria will follow him to Deepdale should the deal go through.
Stevenage confirmed on Monday that they had received an approach from the Lillywhites for their manager, who has led the Hertfordshire side to back-to-back promotions in the last two years.
And talks between Westley and North End have been ongoing since then.
Preston have been in the hands of caretaker bosses Graham Alexander and David Unsworth since 14 December.
Reports had suggested Alexander and Unsworth would get the job on a full-time basis and the Lancashire side had previously stated they would wait until January to appoint a successor.
The interim managers have overseen one win, two draws and a defeat since taking charge but it is now expected that recently appointed Ridsdale wants a new man in charge.
Westley's recent record as manager is impressive, as his Stevenage side, who sit seven places above the Lillywhites in seventh, have tasted defeat just once in their last 15 games across all competitions, and were playing non-league football just two years ago.