Ok so I know they have Street in camp and he's an awesome young keeper.
But two Canucks I think might help TFC and are realistic are:
Marcel De Jong
http://en.wikipedia.org/wiki/Marcel_de_Jong
Only 23 years old, great left back/left winger a position TFC is desperate to get someone for. Takes free kicks and corners, awesome set piece taker... consistently scores off them in Holland and also scored a beauty vs. Italy in the U20 WC 2005. His contract expires this summer!! So with the right offer TFC could have him for free. Probably the second best Canadian left back out there.
http://www.youtube.com/watch?v=IOSie6nvgVc
http://www.youtube.com/watch?v=tTW1cjgZMOU
http://www.youtube.com/watch?v=p67gAUP0HHs
Another guy Im noticing that is playing well in England is Gavin McCallum, he was capped a couple times by the U20s and now he plays in league 2.. 22 years old I think he plays as an attacking winger and sometimes striker
After todays game winner he has 6 goals in 5 starts... 11 appearances overall in the league... surely a guy with numbers like that will be in league 1 before long at only 22 years old. TFC should try to snap him up first.. they signed Johann Smith why not McCallum?
http://en.wikipedia.org/wiki/Gavin_McCallum