Don't forget he played for THE Manchester United. That MUST mean he is in the top 2 or 3 wingers in the world, always has been and always will be. And doubt forget he doubtless came through the academy, apparently it's so obvious we don't even need evidence. So on the basis he played for United, I'm surprised they didn't bid £20 million and throw in their 17 best players as well, that's what normally happens, and United think they're too good to take those 17 players, who would not be payed, as they'd be honoured to be swapped for THE Park Ji-Sung, and because all of United's players OBVIOUSLY play for nothing.
So on that basis, Park should be worth x10 of Messi, Ronaldo, and Neymar PUT TOGETHER. Because that's what United players are. Yep, even Carrick. And Fryers. And Will Keane. And Pube-Head.