The Soviet Union was in no state capable of an offensive war with Germany in 1941, and that was not the plan either, Stalin was desperately trying to keep the peace in the last months. The good old Molotov-Ribbentrop treaty was meant to keep Germany at bay while Stalin reformed his army.
When Germany attacked the Red Army was in the process of phasing out its lousy old tank for the newer ones (you know which), it was forming large tank armies, prior to Germany doing so.
But Stalin feared a strong Germany more than anything. And it seems that the reinvigourated Red Army would be able to launch capable offensives in the summer-autumn of 1942, and it would be very capable in 1943 when all the reforms were ment to be finished.

I believe there are archived discussion in the high ranks of the Soviet Union about what to do with Germany since it was getting so strong. While no plans were laid out there was an agreement that something active would have to be done about it.