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.