Without a shred of exaggeration, Zaitsev is the best combination of talent and age of any defenceman the KHL. Given that the league is the consensus number two in the world and that many of its players could easily drop into the NHL, that's particularly impressive.
The eyes will tell you instantaneously that the youngster is an NHL-ready player. At 6'2 and a little under 200 pounds, he's got a frame that can hold up to the rigors of the big leagues. He's a crafty skater who has a small ice-capable first step, he can make outlet passes with ease, and has a howitzer from the point. The Leafs are surely salivating at the fact that he is a right-handed shot; something that the defensive group is short on right now.
The numbers back up the qualitative thoughts, though. In a league where teams dress eight defencemen, Zaitsev averaged over 20 minutes per game, the highest on CSKA Moscow and something that only 54 others did over a 20+ game stretch. In this group, only five were under 25; Zaitsev was one of them.
Of those five, Zaitsev is by far the most capable offensively. In 46 games, he put up 8 goals and 18 assists, good for 26 points and an average of 1.61 points per 60 minutes of ice time (all situations). That's over double the second-best player in his age bracket, and good for 5th in the league. His shot rate (6.4 per 60) is in the top fifteen among these high-minute defencemen, and his hit and blocked shot rates show just enough frequency to show that he's not shy to sacrifice, but not enough to believe that he's chasing the puck around.