I was holding off until it was something more official, but I see JJ and crew have posted it and the CDC is buzzing, so let's roll with it.
Gillis went on The Pipeline and mentioned some work on signing some prospects, the most noteworthy being it sounds like Sergei Shirokov may already be a Canuck or, at least, signed in principle.
When Vancouver acquired Luongo and Krajicek, Florida also sent along a 6th round pick for the 2006 Draft. Sergei Shirokov was selected with that pick.
From Hockey's Future:
Small and undersized at 5’10, 176 lbs, Shirokov is not a fast skater, but is described by the Canucks scouting staff as being a very strong skater. He does not possess dynamic offensive skills, but has the vision and finishing ability to potentially develop into a supporting scorer at the NHL level, and could prove to be a very valuable player for the Canucks if he can round out his defensive game.
As Canucks Hockey Blog notes (link above):
Statistically, Shirokov just finished his best season. Playing in the KHL, he led his CSKA team in goals (17) and points (40) in 56 games; his 40 points were also good for 23rd overall in the league. (To add some context, Sergey Mozyakin led the league with 76 points in 56 GP; Jaromir Jagr had 53 points in 55 GP; Alexander Radulov had 48 points in 52 GP; and Alexei Yashin had 47 points in 56 GP.)
As we wait for official word, you can see Shirokov's work (#52) in the following video:
Or, if you know Russian, here he is talking to a Puck Bunny.