Here is a brief look at what I would project their upside to be and when we might see them reach the NHL:
1. Marc Cheverie - Fringe NHL starter / 2-3 years
2. Mark Visentin - Quality NHL starter / 4-5 years
3. Mattias Modig - NHL backup / 2-3 years
4. Sergei Bobrovsky - NHL backup / 3 years
5. Jean-Philippe Levasseur - NHL backup / 2 years
6. Martin Jones - NHL starter / 4 years
Just remember that a whole universe worth of things could happen with all of these goalies. Some have much more limited skill/upside ... like Modig and Levasseur. Some have legit talent that have to prove it and take advantage of opportunities ... like Cheverie and Visentin and Jones ... and Bobrovsky is a crapshoot that could go either way.