With young pitchers like Liriano who is coming off a major injury/surgery, it is always better to wait a full year before paying for him. See how he does during rehab and in Spring Training, keep an eye on him if you are interested. However, based on everything I've seen and heard, he will likely be taken in the middle rounds which I think is too high because there are still viable players with good upside available. People forget that while he was dominant, he has yet to pitch a full season in MLB so there are way too many variables working against him. Will he be 100% at the start of the season? Will he be throwing as hard? Will he be as effective? Will he need to chance his mechanics to preserve his arm? Will he need to change the way he pitches to save his arm? Will he last the entire season without hurting himself again or wearing down? I could be completely wrong but for me, the risks are too high.
"Think of how stupid the average person is, and realize half of them are stupider than that." ~George Carlin