I was just reading on Canoe that Kovy is already back and walking with a fully torn ACL. If the Sens get past the Pens in the first round, I bet he's back and playing in the second round.
I have personally gone through ACL surgery and know how much it sucks. The indicator here is that he's actually walking without crutches. I fully tore my ACL, yet was back to walking normally within 3 days. I got a brace fitted and was actually able to play soccer again before my surgery date 2 months after the injury. Obviously Kovy has the help of a full-time training staff and the best in sports bracing technology, so I figure the Sens will at very least postpone the surgery date until after the playoffs and try to rehab it a bit.