Eamonn Brophy could be out until the new year following an injury sustained against Aberdeen last weekend.
The forward was substituted in the first-half of last weekend's defeat and while scan results have shown it's nothing too serious, Brophy will miss the next few weeks of action.
It's nothing too major," the manager told press this afternoon.
"It's a grade one strain of his hamstring. That can take anything from two to four weeks.
"We'll not rush him back, we'll give him all the time he needs. We've got a great medical team here looking after him.
"Obviously we'd like to get him back in amongst it as quickly as possible, but at the same time with muscle injuries you need to be careful.
"We don't want to rush him back and then it goes again. We'll make sure he's right before he comes back in.
"Brophy is definitely out for the weekend so we've got Curtis Main, Kristian Dennis and Lee Erwin available. One or two will go and lead the line for us."
Brophy has scored five goals for Saints this season but is set to be out for a few weeks
