One of the Swedish Leafs fans posted a link to one of Sweden's biggest online news websites which states that the Leafs are interested in signing former Philadelphia draft pick Joacim Eriksson. Through his first 11 games in the Eliteserien, Eriksson has a 1.52 GAA and .940 Save%. The 21 year old went unsigned by Philadelphia after they signed Bryzgalov and already had Bobrovsky.
Actual quote in the article comes from Thommie Bergmann, Toronto's head European scout. Toronto prospect Petter Granberg currently plays on the same team as Eriksson. Article also states Toronto is interested in French forward PE Bellemere, also on Eriksson's team.
May be an indication that Gustavsson's on his last contract with the Leafs, depending how the rest of the season shakes out.
Leafs seem to like maintaining 5 goalies on pro contracts: 2 in the NHL, 2 in the AHL, 1 in the ECHL. Partially an acknowledgement that the ECHL has become a fine path for goalie development (see Reimer and Scrivens for current Leaf examples, Owuya at the start of this season)