Travis Lee of the Eggs. He is a guy who really saves his infielders a number of errors and RA and SH are not good at picking throws and neither is tall(Lee is 6'3"). With the need for not having a great offensive 1B if they don't plan to move Dunn to 1b I would strongly consider dealing for a quality defensive 1b expecially with a number of infielders who will test the ability of the 1b to field throws.
Just a thought.