The only thing I can think is if this is referring to the first round pick from the Wally trade, which turned into a 2nd rounder, because Minnesota still owes LA a first round pick. But I believe that would have ended up being a 2012 first rounder.
But that pick was traded to Boston, and then back to Minnesota.
...so, all in all, I am stumped.
Also, I read this as we are recieving Minnesota's second rounder, not Boston's. It is suggesting that it was Minnesota's second rounder that was traded to Boston, and somehow ended up in Cleveland.
Basically though, I just think the website has things mixed up.