Tigers bosses have admitted they are set to unveil a new signing within the next 48-hours.
The Owlerton side slumped to a convincing defeat at the hands of reigning champions Edinburgh and are keen to plug the gap left by the injury to Ashley Birks.
Now it appears they will bring in a rider who has never appeared in league racing in the UK.
Co-promoter Damien Bates said: “We have settled on the rider we want and we are just awaiting the formalities to be completed.
We have spoken to dozens of riders since Simon Stead was hurt in April and now we’re without Ash the situation has become even more important.”
Sheffield kept up the pace with Edinburgh for the first half of the meeting on a track where they don’t have the best of records.
Craig Cook, the home favourite who was wildcard in the British Grand Prix last weekend, broke the Armadale track record with a fine ride in Heat 4.
But the breakthrough came in the next when Kevin Wolbert, who had held talks about a winter move to Sheffield, teamed up with German star Gerd Riss for a Monarchs 5-1.
And when Cook and West Yorkshire teenager Max Clegg brushed aside David Bellego in Heat 7 a handy eight-point gap emerged for the home side.
There was no way back for Jack Lee’s men after that with a succession of maximums for the Monarchs to put the meeting beyond doubt.
Tigers go to Newcastle licking their wounds tomorrow with Australian star Josh Grajczonek stepping in for injured skipper Simon Stead. The rider replacement facility will again operate for Birks before the new signing comes in.
EDINBURGH 60: Craig Cook 15, Justin Sedgmen 13+2, Kevin Wolbert 11, Max Clegg 10+2, Sam Masters 6+1, Erik Riss 5+3, Liam Carr 0.
SHEFFIELD 31: Aaron Summers 9, Arthur Sissis 6+1, Cameron Heeps 6, Josh Bates 5+1, Andre Compton 3+1, David Bellego 2+1, Ashley Birks r/r.