Rory hasn't played since turning out at full-back in the Celtic League opener against Cardiff. Glasgow won that match by 23-13, but Rory took a shoulder knock in that game. Four days later he had a further upset when he was omitted from Scotland's squad for the World Cup in Australia.
Rory has missed Glasgow's last two matches, including the 19-9 victory over Celtic Warriors in the cup first-round tie at Bridgend. But he has now proved his fitness in training.
Glasgow's Gordon Bulloch thinks England will flop in Australia under the weight of expectancy they have piled on their own shoulders. He told the BBC website: "I think a few of the English guys might find themselves being stretched too far, especially when the heat comes on and teams are playing fast rugby."