“For the next two years, Cubans will be exempt as long as they are 23 and have played in a Cuban professional league for at least three seasons. Beginning in 2014-15 Cubans must have five years of pro experience to be exempt. So if Yoenis Cespedes had still been unsigned by July 2, he would have been exempt from the new rules anyway, where 20-year-old outfielder Jorge Soler will be subject to the new rules unless he can get all of his paperwork pushed through and sign before July 2.”

http://www.baseballamerica.com/today/prospects/international-affairs/2012/2613345.html

Not sure his service time etc… Also the Mexican league has different rules. See the in the same article.