Their stats will be diluted? What do you mean by that? You said yourself it's one of the best teams ever. How will being on a much better team hurt his stats? More guys on base to hit in, and better hitters behind him as protection and to hit him in. I don't see the problem........
And unless errors are a stat in your league, who cares how he is on defense? It's not like the Yanks will bench him if he bobbles a few balls.
"Jack, will you call me, if you're able?"
"I've got your phone number written, in the back of my Bible."