I'm thinking someone with potential to be a all star. I like Lowry as well, but I don't think he's got the ability to take over a game. James Harde and his stupid beard fits the bill imo. I'd be okay with a max offer sent his way.
I like Harden and would love for him to be on the Raps, but he's a west coast kid who has already mentioned Phoenix as a possible team he'd be interested in (who would probably be interested since they lost out on Gordon). I think it would be tough to try and get Harden via free agency.
Easier in my opinion would be to get the stud via trade.