The left-sided midfielder has been sidelined since picking up a hamstring problem against Blackburn Rovers almost a fortnight ago.
The Swiss youngster is progressing well and Head Coach Martin revealed this afternoon: "Ziegler trained today so that's good and he's a fit player anyway. Pedro Mendes also trained today.
"They could both be in the squad. It's 90 per cent. I think Mendes will be good and with Ziegler we have to wait until tomorrow, but he looked fine today."
Pedro came off at half-time last weekend against Manchester City with a knee problem.
We'll have full team news tomorrow...
Reto Ziegler could be available for Saturday's Barclays Premiership clash against Southampton.