Per TSN text.
"Blue Bombers trade QB Steven Jyles to Argonauts for 4th overall pick in 2011, conditional 4th round pick in 2012."
Taking a look at the Blue Bombers wikipedia page that leaves them with
Buck Pierce
Alex Brink
Joey Elliot
Justin Goltz
at QB.
TSN article
http://tsn.ca/cfl/story/?id=360142