Stop worrying about PageRank! Google even says "PageRank is no longer—if it ever was—the be-all and end-all of ranking.) (http://googlewebmastercentral.blogspot.com/2011/06/beyond-pagerank-graduating-to.html). Don't worry about PaqeRank and worry about the quality of the site you are looking to get a link from. If it got hit by Penguin it's got more problems to fix than whether or not it's passing Pagerank.